ASTROSAT CZTI

Data Quality Report

Orbit 20220410_A11_093T01_9000005064_level2

Creation date: 2022-04-23T16:24:04.899388
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_093T01_9000005064cztM0_level2_bc.evt modeM0/AS1A11_093T01_9000005064cztM0_level2_quad_clean.evt
Size (bytes)5,900,031,3601,592,942,400
Size5.5 GB 1.5 GB
Events in quadrant A28,594,36810,305,744
Events in quadrant B62,451,0519,696,365
Events in quadrant C33,557,33910,599,145
Events in quadrant D46,355,4539,857,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02442280
B04108960
C02538110
D03091260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023180
B023180
C023180
D023180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04370
B04370
C04370
D04370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11362910420.917019%
B1136292147318.897465%
C11362914431.269922%
D11362743943.867039%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 157307 113651 275 275 0.17% 0.24%
B 157307 113601 491 491 0.31% 0.43%
C 157307 113625 117 117 0.07% 0.10%
D 157307 113623 436 436 0.28% 0.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 3098352 2430.41 5784 5704 1272.5
A 10 83 1607255 1258.61 5784 5704 1272.5
A 9 143 400298 310.1 5784 5704 1272.5
B 5 236 25578703 23978.85 5367 5254 1066.5
B 5 172 14655077 13736.35 5367 5254 1066.5
B 4 232 579122 538.09 5367 5254 1066.5
C 15 214 4414400 3320.82 5732 5697 1327.6
C 0 10 4164610 3132.67 5732 5697 1327.6
C 1 23 889793 665.94 5732 5697 1327.6
D 8 195 6995209 5233.32 5646 5466 1335.6
D 7 80 3851890 2879.87 5646 5466 1335.6
D 10 118 1789260 1335.55 5646 5466 1335.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter