ASTROSAT CZTI

Data Quality Report

Orbit 52333

Creation date: 2025-07-22T19:06:01.361099
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/AS1C09_011T05_9000006474_52333cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52333cztM0_level2_quad_clean.evt
Size (bytes)704,013,12083,076,480
Size671.4 MB 79.2 MB
Events in quadrant A3,196,557600,436
Events in quadrant B4,447,348631,399
Events in quadrant C9,880,240385,721
Events in quadrant D8,034,405445,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143095
B01767312
C03384317
D02837413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481540.833205%
B64802043.148148%
C6480240037.037037%
D6479138221.330452%

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 7413 6485 32 32 0.43% 0.49%
B 7413 6485 112 112 1.51% 1.73%
C 7412 6483 1982 1982 26.74% 30.57%
D 7413 6485 1189 1189 16.04% 18.33%

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 5 240 110510 665.3 663 647 165.1
A 11 3 93566 562.69 663 647 165.1
A 8 249 64586 387.2 663 647 165.1
B 10 254 608089 4306.88 654 631 141.0
B 12 32 471025 3335.09 654 631 141.0
B 0 216 224777 1589.2 654 631 141.0
C 15 224 2453139 17105.97 521 517 143.4
C 15 178 1721967 12006.36 521 517 143.4
C 15 248 1346624 9388.51 521 517 143.4
D 15 78 1514324 9274.04 576 551 163.2
D 15 93 935307 5726.73 576 551 163.2
D 2 62 906867 5552.49 576 551 163.2

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