ASTROSAT CZTI

Data Quality Report

Orbit 54037

Creation date: 2025-09-24T17:00:26.758201
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_041T01_9000006510_54037cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54037cztM0_level2_quad_clean.evt
Size (bytes)580,132,80083,986,560
Size553.3 MB 80.1 MB
Events in quadrant A2,962,781619,170
Events in quadrant B3,322,743667,573
Events in quadrant C3,322,983584,534
Events in quadrant D11,389,593244,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133171
B0140091
C0142641
D0380672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123520.849257%
B61241001.632920%
C61241402.286088%
D6123359058.631390%

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 7353 6124 42 42 0.57% 0.69%
B 7354 6125 50 50 0.68% 0.82%
C 7354 6125 98 98 1.33% 1.60%
D 7352 6123 3278 3278 44.59% 53.54%

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 215444 1320.53 654 637 162.7
A 0 8 97718 596.81 654 637 162.7
A 3 45 26117 156.64 654 637 162.7
B 5 236 203773 1470.64 650 630 138.1
B 4 171 144003 1037.94 650 630 138.1
B 0 213 89488 643.28 650 630 138.1
C 13 3 393279 2223.13 644 636 176.6
C 4 5 136390 768.63 644 636 176.6
C 3 233 77083 432.84 644 636 176.6
D 8 176 9110640 77069.97 412 392 118.2
D 2 165 351973 2974.27 412 392 118.2
D 3 12 78745 662.84 412 392 118.2

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