ASTROSAT CZTI

Data Quality Report

Orbit 57882

Creation date: 2026-06-09T20:19:00.499743
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_125T11_9000006582_57882cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57882cztM0_level2_quad_clean.evt
Size (bytes)1,463,725,440356,022,720
Size1.4 GB 339.5 MB
Events in quadrant A10,811,3932,333,885
Events in quadrant B11,721,1532,475,768
Events in quadrant C17,127,2552,152,157
Events in quadrant D12,592,8292,103,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513113
B0529663
C0685643
D0547553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249093591.441246%
B249095852.348549%
C2490914095.656590%
D249094041.621904%

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 26399 24912 15 15 0.06% 0.06%
B 26399 24912 83 83 0.31% 0.33%
C 26399 24911 897 897 3.40% 3.60%
D 26399 24912 154 154 0.58% 0.62%

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 7 64 222705 334.56 2677 2610 657.9
A 3 245 133928 199.61 2677 2610 657.9
A 3 137 33454 46.89 2677 2610 657.9
B 7 252 235875 414.36 2635 2532 563.1
B 0 213 187110 327.76 2635 2532 563.1
B 10 247 156361 273.16 2635 2532 563.1
C 15 224 5247218 7630.65 2540 2513 687.3
C 2 12 971438 1409.71 2540 2513 687.3
C 12 252 316326 456.57 2540 2513 687.3
D 8 240 420650 577.1 2590 2472 724.6
D 12 110 393523 539.66 2590 2472 724.6
D 2 249 368662 505.35 2590 2472 724.6

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