ASTROSAT CZTI

Data Quality Report

Orbit 57729

Creation date: 2026-05-30T13:51:09.785499
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_125T09_9000006578_57729cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57729cztM0_level2_quad_clean.evt
Size (bytes)529,122,24098,844,480
Size504.6 MB 94.3 MB
Events in quadrant A3,016,455671,808
Events in quadrant B3,557,685718,437
Events in quadrant C8,784,251538,273
Events in quadrant D3,710,161599,480

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138232
B0150232
C0307002
D0156692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670600.899550%
B66701602.398801%
C6670147022.038981%
D6669841.259559%

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 7815 6671 11 11 0.14% 0.16%
B 7815 6671 34 34 0.44% 0.51%
C 7815 6670 1322 1322 16.92% 19.82%
D 7814 6670 50 50 0.64% 0.75%

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 7 223 112498 621.84 738 720 179.8
A 3 128 31607 171.83 738 720 179.8
A 3 137 8661 44.18 738 720 179.8
B 4 80 255188 1668.33 725 699 152.5
B 10 16 183579 1198.89 725 699 152.5
B 0 171 76037 493.88 725 699 152.5
C 12 254 3378344 18718.3 663 656 180.4
C 15 224 1946317 10782.37 663 656 180.4
C 9 38 628217 3477.79 663 656 180.4
D 3 224 456471 2286.45 716 683 199.3
D 8 160 125026 623.76 716 683 199.3
D 3 12 106853 532.6 716 683 199.3

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