ASTROSAT CZTI

Data Quality Report

Orbit 57623

Creation date: 2026-05-23T08:08:33.862053
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_9000006576_57623cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57623cztM0_level2_quad_clean.evt
Size (bytes)461,197,44096,937,920
Size439.8 MB 92.4 MB
Events in quadrant A3,336,491634,121
Events in quadrant B3,508,094681,084
Events in quadrant C5,547,063569,132
Events in quadrant D4,130,170557,794

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150572
B0154402
C0213822
D0171882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7078741.045493%
B7079731.031219%
C70785868.279175%
D70781832.585476%

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 9305 7362 27 27 0.29% 0.37%
B 9306 7363 9 9 0.10% 0.12%
C 9305 7362 484 484 5.20% 6.57%
D 9305 7362 182 182 1.96% 2.47%

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 311368 1627.23 772 752 190.9
A 7 160 27933 142.39 772 752 190.9
A 3 128 12606 62.1 772 752 190.9
B 4 80 227347 1381.94 768 738 164.0
B 10 247 61355 369.66 768 738 164.0
B 7 252 30707 182.76 768 738 164.0
C 15 224 1629594 8251.6 729 723 197.4
C 9 38 887408 4491.8 729 723 197.4
C 12 2 55082 275.37 729 723 197.4
D 15 142 627642 2970.52 744 709 211.1
D 2 120 140551 662.6 744 709 211.1
D 8 160 115471 543.76 744 709 211.1

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