ASTROSAT CZTI

Data Quality Report

Orbit 57293

Creation date: 2026-05-01T04:18:41.105227
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_049T03_9000006570_57293cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57293cztM0_level2_quad_clean.evt
Size (bytes)316,745,28061,315,200
Size302.1 MB 58.5 MB
Events in quadrant A2,360,045420,500
Events in quadrant B2,560,687430,068
Events in quadrant C2,727,921369,665
Events in quadrant D3,722,223315,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139193716
B0151224291
C0166725460
D02584411882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0132
C0121
D0131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013126
B013127
C013236
D013129

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4723110.232903%
B46451292.777180%
C4533962.117803%
D41991864.429626%

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 7709 5576 4 4 0.05% 0.07%
B 7881 5535 61 61 0.77% 1.10%
C 7881 5407 72 72 0.91% 1.33%
D 7692 4999 134 134 1.74% 2.68%

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 8 4 296435 2314.35 512 500 127.9
A 3 14 67355 522.84 512 500 127.9
A 4 3 7996 58.62 512 500 127.9
B 5 185 257881 2429.45 491 473 106.0
B 10 16 128959 1212.67 491 473 106.0
B 0 63 84483 792.9 491 473 106.0
C 15 224 614711 4779.23 469 466 128.5
C 14 254 83768 648.14 469 466 128.5
C 6 223 68816 531.81 469 466 128.5
D 3 224 1704760 13986.59 430 410 121.9
D 8 240 134493 1100.34 430 410 121.9
D 3 12 89242 728.99 430 410 121.9

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