ASTROSAT CZTI

Data Quality Report

Orbit 57160

Creation date: 2026-04-22T04:54:39.904120
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_070T08_9000006568_57160cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57160cztM0_level2_quad_clean.evt
Size (bytes)533,387,52088,614,720
Size508.7 MB 84.5 MB
Events in quadrant A2,737,246633,937
Events in quadrant B3,776,625651,491
Events in quadrant C8,450,997418,548
Events in quadrant D4,286,692536,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129082
B0157252
C0295222
D0171882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335220.347277%
B63353134.940805%
C6335207432.738753%
D63353124.925020%

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 7535 6336 1 1 0.01% 0.02%
B 7535 6336 194 194 2.57% 3.06%
C 7535 6335 1788 1788 23.73% 28.22%
D 7535 6336 294 294 3.90% 4.64%

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 55177 323.04 680 663 168.8
A 10 248 14129 79.8 680 663 168.8
A 4 3 10119 56.03 680 663 168.8
B 10 16 580213 4138.08 656 632 140.1
B 0 213 184391 1312.0 656 632 140.1
B 4 67 96521 684.63 656 632 140.1
C 15 198 5656745 36473.31 565 560 155.1
C 15 224 290144 1867.35 565 560 155.1
C 13 3 211413 1359.66 565 560 155.1
D 14 49 506610 2790.47 637 607 181.3
D 12 33 434746 2394.16 637 607 181.3
D 2 249 248972 1369.66 637 607 181.3

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