ASTROSAT CZTI

Data Quality Report

Orbit 58841

Creation date: 2026-08-13T09:38:46.782332
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_106T01_9000006596_58841cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58841cztM0_level2_quad_clean.evt
Size (bytes)2,475,256,320426,726,720
Size2.3 GB 407.0 MB
Events in quadrant A37,045,1722,088,379
Events in quadrant B19,129,7933,150,269
Events in quadrant C15,805,4722,859,387
Events in quadrant D17,218,7812,665,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320973
B0785463
C0694493
D0730664

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06340
B06340
C06340
D06340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A313621034032.969836%
B3136211053.523372%
C313624471.425292%
D313617512.394694%

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 32917 31363 7471 7471 22.70% 23.82%
B 32917 31365 521 521 1.58% 1.66%
C 32917 31365 319 319 0.97% 1.02%
D 32916 31364 621 621 1.89% 1.98%

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 95 16661708 24004.35 2807 2738 694.0
A 15 233 4346564 6259.13 2807 2738 694.0
A 3 14 2328507 3351.26 2807 2738 694.0
B 4 171 1935224 2674.23 3407 3269 722.4
B 5 185 932808 1286.68 3407 3269 722.4
B 2 249 591618 814.4 3407 3269 722.4
C 15 147 675571 730.98 3364 3325 919.6
C 12 252 393575 424.35 3364 3325 919.6
C 6 223 370624 399.39 3364 3325 919.6
D 2 120 1187237 1253.93 3344 3199 944.3
D 2 249 461349 485.19 3344 3199 944.3
D 7 222 337800 354.35 3344 3199 944.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct