ASTROSAT CZTI

Data Quality Report

Orbit 53949

Creation date: 2025-09-18T03:15:57.125545
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/AS1A14_057T04_9000006508_53949cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53949cztM0_level2_quad_clean.evt
Size (bytes)755,902,08073,347,840
Size720.9 MB 69.9 MB
Events in quadrant A2,914,482614,399
Events in quadrant B3,484,044643,419
Events in quadrant C7,852,032399,084
Events in quadrant D13,255,479137,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130031
B0145566
C0277299
D04353626

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117610.997221%
B61132023.304433%
C6117201933.006376%
D6115468576.614881%

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 7297 6118 10 10 0.14% 0.16%
B 7297 6117 125 125 1.71% 2.04%
C 7298 6119 1936 1936 26.53% 31.64%
D 7298 6118 3853 3853 52.80% 62.98%

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 15 174 77758 465.85 671 657 165.5
A 3 14 47046 280.29 671 657 165.5
A 0 8 36758 218.13 671 657 165.5
B 0 213 528540 3734.92 663 640 141.3
B 0 155 134139 944.51 663 640 141.3
B 5 250 84290 591.83 663 640 141.3
C 1 241 5457412 35810.95 551 546 152.4
C 12 2 61884 402.53 551 546 152.4
C 13 3 51903 337.03 551 546 152.4
D 8 176 11156706 130313.91 297 283 85.6
D 6 239 246007 2870.21 297 283 85.6
D 2 172 225211 2627.3 297 283 85.6

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