ASTROSAT CZTI

Data Quality Report

Orbit 20220619_A11_097T24_9000005196_level2

Creation date: 2022-06-23T15:18:45.024886
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_097T24_9000005196cztM0_level2_bc.evt modeM0/AS1A11_097T24_9000005196cztM0_level2_quad_clean.evt
Size (bytes)5,069,018,8801,237,008,960
Size4.7 GB 1.2 GB
Events in quadrant A27,762,5357,848,948
Events in quadrant B40,546,7357,654,809
Events in quadrant C33,339,5477,685,261
Events in quadrant D44,647,4256,999,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021720
B021720
C021720
D021720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410710
B03004470
C02451090
D03148610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10614322432.113187%
B10614384938.001470%
C10614319531.839971%
D10614376977.251538%

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 144224 106163 34 34 0.02% 0.03%
B 144224 106134 89 89 0.06% 0.08%
C 144224 106140 365 365 0.25% 0.34%
D 144224 106136 326 326 0.23% 0.31%

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 2706658 2266.8 5454 5373 1191.7
A 15 223 2359062 1975.11 5454 5373 1191.7
A 12 189 658939 548.44 5454 5373 1191.7
B 5 172 14693068 14133.59 5300 5190 1039.2
B 5 255 1697147 1628.11 5300 5190 1039.2
B 4 171 1285995 1232.47 5300 5190 1039.2
C 4 254 6178967 5179.27 5264 5220 1192.0
C 15 214 4233635 3547.29 5264 5220 1192.0
C 0 10 1520725 1271.38 5264 5220 1192.0
D 12 6 9622074 8046.04 5139 4988 1195.3
D 2 250 3322963 2775.95 5139 4988 1195.3
D 2 249 3297245 2754.43 5139 4988 1195.3

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