ASTROSAT CZTI

Data Quality Report

Orbit 37485

Creation date: 2024-06-27T21:40:37.697709
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/AS1C07_001T11_9000005326_37485cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37485cztM0_level2_quad_clean.evt
Size (bytes)1,009,025,280190,247,040
Size962.3 MB 181.4 MB
Events in quadrant A8,239,2561,291,288
Events in quadrant B6,850,7761,292,031
Events in quadrant C5,664,5151,282,261
Events in quadrant D9,077,4991,150,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316004
B0274375
C0234953
D0343596

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10768940.872957%
B107674153.854370%
C10768990.919391%
D10766138612.873862%

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 13543 10770 36 36 0.27% 0.33%
B 13543 10770 329 329 2.43% 3.05%
C 13543 10770 90 90 0.66% 0.84%
D 13543 10769 1322 1322 9.76% 12.28%

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 15 222 2747175 11381.3 1197 1173 241.3
A 10 83 552231 2283.96 1197 1173 241.3
A 13 248 117194 480.87 1197 1173 241.3
B 5 172 737758 3280.16 1177 1146 224.6
B 15 35 398472 1769.31 1177 1146 224.6
B 0 229 315902 1401.62 1177 1146 224.6
C 15 214 463258 1710.73 1164 1169 270.1
C 14 254 410866 1516.76 1164 1169 270.1
C 0 207 137554 504.92 1164 1169 270.1
D 12 227 1915124 7279.66 1091 1062 262.9
D 13 249 1803937 6856.79 1091 1062 262.9
D 2 249 336076 1274.14 1091 1062 262.9

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