ASTROSAT CZTI

Data Quality Report

Orbit 21098

Creation date: 2024-06-27T18:23:31.503207
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/AS1A05_163T01_9000003118_21098cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21098cztM0_level2_quad_clean.evt
Size (bytes)903,663,360143,792,640
Size861.8 MB 137.1 MB
Events in quadrant A5,097,350962,488
Events in quadrant B6,128,851959,339
Events in quadrant C5,163,129929,013
Events in quadrant D10,254,806762,841

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222502
B0250582
C0222752
D0375102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106811561.460537%
B106822542.377832%
C106821841.722524%
D10682168215.746115%

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 12221 10683 17 17 0.14% 0.16%
B 12222 10683 75 75 0.61% 0.70%
C 12222 10684 7 7 0.06% 0.07%
D 12222 10684 1465 1465 11.99% 13.71%

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 5 16 93483 354.3 1291 1262 260.3
A 13 254 15261 53.78 1291 1262 260.3
A 15 192 14113 49.37 1291 1262 260.3
B 0 182 367896 1487.06 1283 1249 246.6
B 7 220 330823 1336.7 1283 1249 246.6
B 3 64 200638 808.69 1283 1249 246.6
C 14 238 193801 656.13 1240 1249 293.5
C 7 221 93844 315.52 1240 1249 293.5
C 9 54 40918 135.17 1240 1249 293.5
D 1 52 3712865 13506.3 1136 1106 274.8
D 1 20 997583 3625.97 1136 1106 274.8
D 1 239 907712 3298.95 1136 1106 274.8

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