ASTROSAT CZTI

Data Quality Report

Orbit 35712

Creation date: 2022-05-09T15:26:37.164197
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/AS1A09_142T05_9000005118_35712cztM0_level2.evt modeM0/AS1A09_142T05_9000005118_35712cztM0_level2_quad_clean.evt
Size (bytes)202,587,84022,492,800
Size193.2 MB 21.5 MB
Events in quadrant A1,231,043128,214
Events in quadrant B1,674,603127,810
Events in quadrant C1,533,676122,765
Events in quadrant D1,524,362122,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051822
B065211
C060271
D061401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249840.160128%
B24981275.084067%
C2498712.842274%
D2498712.842274%

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 4651 2499 0 0 0.00% 0.00%
B 4651 2499 100 100 2.15% 4.00%
C 4651 2499 69 69 1.48% 2.76%
D 4651 2499 74 74 1.59% 2.96%

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 68657 1110.58 298 293 61.6
A 13 6 7907 123.69 298 293 61.6
A 3 137 3192 47.09 298 293 61.6
B 5 172 309462 5377.54 291 284 57.5
B 5 255 204506 3552.04 291 284 57.5
B 0 155 12567 213.64 291 284 57.5
C 0 10 215412 3172.93 286 288 67.8
C 15 214 104683 1539.75 286 288 67.8
C 0 207 76762 1127.94 286 288 67.8
D 13 249 298763 4174.76 285 276 71.5
D 12 6 71940 1002.32 285 276 71.5
D 10 118 17050 234.61 285 276 71.5

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