ASTROSAT CZTI

Data Quality Report

Orbit 57378

Creation date: 2026-05-06T20:50:04.312502
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_102T01_9000006572_57378cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57378cztM0_level2_quad_clean.evt
Size (bytes)386,305,92087,255,360
Size368.4 MB 83.2 MB
Events in quadrant A2,561,383586,331
Events in quadrant B2,881,694619,833
Events in quadrant C5,156,114516,429
Events in quadrant D3,246,817512,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119341
B0127601
C0194081
D0138401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5829631.080803%
B58301071.835334%
C58305279.039451%
D58302003.430532%

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 6973 5828 1 1 0.01% 0.02%
B 6974 5829 20 20 0.29% 0.34%
C 6974 5829 462 462 6.62% 7.93%
D 6974 5829 171 171 2.45% 2.93%

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 3 14 14596 87.45 646 628 159.7
A 13 248 11971 71.01 646 628 159.7
A 3 61 9106 53.08 646 628 159.7
B 5 185 175599 1286.0 630 606 136.1
B 0 153 40538 293.45 630 606 136.1
B 4 201 23970 171.7 630 606 136.1
C 15 224 2237592 13824.48 589 583 161.8
C 8 7 195058 1201.84 589 583 161.8
C 12 249 85604 525.42 589 583 161.8
D 8 240 384568 2209.02 613 585 173.8
D 15 142 96541 552.03 613 585 173.8
D 3 12 65473 373.29 613 585 173.8

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