ASTROSAT CZTI

Data Quality Report

Orbit 20190525_A05_088T05_9000002952_level2

Creation date: 2025-11-30T22:50:13.108930
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_088T05_9000002952cztM0_level2.fits modeM0/AS1A05_088T05_9000002952cztM0_level2_quad_clean.evt
Size (bytes)331,611,840342,552,960
Size316.2 MB 326.7 MB
Events in quadrant A2,054,1302,200,492
Events in quadrant B1,989,4962,208,946
Events in quadrant C1,834,0201,663,564
Events in quadrant D1,682,4061,822,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0753910
B0747420
C01359400
D01079180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07340
B07340
C07340
D07340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A360817242.006596%
B360817502.078656%
C36081694919.259444%
D36081362810.055154%

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 40291 36073 0 0 0.00% 0.00%
B 40291 36076 0 0 0.00% 0.00%
C 40291 36045 0 0 0.00% 0.00%
D 40291 36036 0 0 0.00% 0.00%

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 0 29 1958 10.66 535 498 136.9
A 7 110 1665 8.52 535 498 136.9
A 0 30 1618 8.18 535 498 136.9
B 2 9 1697 11.16 524 498 107.5
B 14 254 1380 8.21 524 498 107.5
B 2 8 1372 8.13 524 498 107.5
C 1 80 1374 7.28 483 448 127.1
C 1 81 1355 7.13 483 448 127.1
C 12 241 1278 6.53 483 448 127.1
D 3 14 1302 6.78 479 436 127.7
D 10 189 1196 5.95 479 436 127.7
D 7 3 1189 5.9 479 436 127.7

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