ASTROSAT CZTI

Data Quality Report

Orbit 59197

Creation date: 2026-09-07T11:28:23.701150
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/AS1T05_271T01_9000006604_59197cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59197cztM0_level2_quad_clean.evt
Size (bytes)537,024,960114,264,000
Size512.1 MB 109.0 MB
Events in quadrant A3,813,398751,896
Events in quadrant B4,665,797792,694
Events in quadrant C4,547,519731,155
Events in quadrant D6,276,379667,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167452
B0190732
C0186292
D0236792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74221702.290488%
B74234195.644618%
C74231702.290179%
D74232673.596928%

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 9832 7423 104 104 1.06% 1.40%
B 9833 7425 196 196 1.99% 2.64%
C 9833 7425 121 121 1.23% 1.63%
D 9833 7425 306 306 3.11% 4.12%

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 10 251 475789 2340.0 836 820 203.0
A 15 233 66758 324.85 836 820 203.0
A 0 24 21768 103.2 836 820 203.0
B 10 247 869892 4861.72 825 792 178.8
B 4 236 139823 777.74 825 792 178.8
B 4 171 126890 705.39 825 792 178.8
C 14 96 374865 1650.44 829 823 226.6
C 3 233 367792 1619.23 829 823 226.6
C 15 147 164207 720.92 829 823 226.6
D 12 110 2612963 11384.04 813 778 229.5
D 11 242 110775 479.37 813 778 229.5
D 11 129 73259 315.87 813 778 229.5

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