ASTROSAT CZTI

Data Quality Report

Orbit 56190

Creation date: 2026-02-15T23:14:15.394619
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_083T04_9000006550_56190cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56190cztM0_level2_quad_clean.evt
Size (bytes)576,512,64087,318,720
Size549.8 MB 83.3 MB
Events in quadrant A9,129,464475,901
Events in quadrant B3,553,507639,253
Events in quadrant C4,121,276556,297
Events in quadrant D4,041,077527,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315641
B0152741
C0172031
D0167535

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6383172226.977910%
B63842103.289474%
C63843265.106516%
D63832884.511985%

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 6968 6384 1432 1432 20.55% 22.43%
B 6969 6385 99 99 1.42% 1.55%
C 6969 6385 258 258 3.70% 4.04%
D 6968 6384 223 223 3.20% 3.49%

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 8 176 2469930 16248.16 607 593 152.0
A 15 32 1940568 12764.98 607 593 152.0
A 7 64 962411 6328.73 607 593 152.0
B 4 171 232564 1628.64 663 639 142.4
B 10 247 157392 1100.76 663 639 142.4
B 5 185 112358 784.52 663 639 142.4
C 12 254 1362419 7784.3 637 632 174.9
C 12 252 175449 999.3 637 632 174.9
C 14 254 40591 228.42 637 632 174.9
D 2 249 479257 2686.09 634 606 178.2
D 11 129 465642 2609.69 634 606 178.2
D 6 239 233466 1306.76 634 606 178.2

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