ASTROSAT CZTI

Data Quality Report

Orbit 58411

Creation date: 2026-07-15T09:22:12.116295
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_045T01_9000006590_58411cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58411cztM0_level2_quad_clean.evt
Size (bytes)1,399,092,480172,010,880
Size1.3 GB 164.0 MB
Events in quadrant A10,835,3741,215,528
Events in quadrant B20,760,836725,758
Events in quadrant C10,049,3201,206,269
Events in quadrant D9,127,2171,150,866

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04113911
B0708045
C0387984
D0361964

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1316310818.212414%
B13163687352.214541%
C131637365.591431%
D131633963.008433%

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 45501 13167 650 650 1.43% 4.94%
B 45501 13164 4620 4620 10.15% 35.10%
C 45501 13166 540 540 1.19% 4.10%
D 45501 13166 307 307 0.67% 2.33%

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 12 114 2448514 6805.5 1460 1426 359.6
A 3 14 1363685 3788.52 1460 1426 359.6
A 7 64 614108 1703.9 1460 1426 359.6
B 6 255 12476738 54725.92 1069 1031 228.0
B 5 172 2980512 13069.79 1069 1031 228.0
B 4 158 364053 1592.43 1069 1031 228.0
C 9 38 1686464 4286.45 1433 1419 393.1
C 6 223 868041 2204.53 1433 1419 393.1
C 14 96 698645 1773.62 1433 1419 393.1
D 8 240 1067337 2601.8 1441 1379 409.7
D 12 110 949672 2314.6 1441 1379 409.7
D 2 249 411373 1000.71 1441 1379 409.7

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