ASTROSAT CZTI

Data Quality Report

Orbit 35353

Creation date: 2022-04-13T11:45:33.068460
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_037T01_9000005066_35353cztM0_level2.evt modeM0/AS1A11_037T01_9000005066_35353cztM0_level2_quad_clean.evt
Size (bytes)131,829,12020,508,480
Size125.7 MB 19.6 MB
Events in quadrant A763,628131,082
Events in quadrant B970,044129,470
Events in quadrant C1,062,966122,345
Events in quadrant D1,089,251124,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031832
B038421
C040621
D042631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152530.196721%
B1525563.672131%
C15251016.622951%
D1525120.786885%

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 2956 1526 0 0 0.00% 0.00%
B 2956 1526 42 42 1.42% 2.75%
C 2956 1526 82 82 2.77% 5.37%
D 2956 1526 10 10 0.34% 0.66%

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 10 83 47703 1194.44 183 179 39.8
A 7 191 3106 73.57 183 179 39.8
A 13 254 2170 50.04 183 179 39.8
B 5 236 199967 5441.99 178 174 36.7
B 5 172 56892 1544.89 178 174 36.7
B 0 155 5211 137.2 178 174 36.7
C 0 10 294045 7142.08 170 170 41.1
C 15 214 63622 1542.08 170 170 41.1
C 15 208 15633 375.8 170 170 41.1
D 7 80 135828 3049.73 178 173 44.5
D 8 195 131421 2950.65 178 173 44.5
D 2 152 48926 1096.04 178 173 44.5

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