ASTROSAT CZTI

Data Quality Report

Orbit 59346

Creation date: 2026-09-16T07:15:39.382739
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_033T01_9000006608_59346cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59346cztM0_level2_quad_clean.evt
Size (bytes)806,385,600111,672,000
Size769.0 MB 106.5 MB
Events in quadrant A3,824,662816,912
Events in quadrant B4,661,306870,901
Events in quadrant C4,310,586792,835
Events in quadrant D16,399,754315,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178890
B0199424
C0188960
D0544670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8418280.332621%
B84172753.267197%
C8418650.772155%
D8418518661.606082%

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 8418 8418 13 13 0.15% 0.15%
B 8417 8417 116 116 1.38% 1.38%
C 8418 8418 30 30 0.36% 0.36%
D 8418 8418 4542 4542 53.96% 53.96%

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 15 233 68479 290.05 952 927 232.9
A 3 245 31754 132.36 952 927 232.9
A 3 14 22755 93.72 952 927 232.9
B 4 236 310247 1517.49 944 907 203.8
B 4 171 139798 681.34 944 907 203.8
B 5 185 81940 397.51 944 907 203.8
C 3 233 251417 974.65 942 938 257.0
C 12 252 172969 669.4 942 938 257.0
C 14 254 52743 201.58 942 938 257.0
D 12 110 13005183 63256.47 719 685 205.6
D 11 129 188764 914.85 719 685 205.6
D 3 12 154211 746.78 719 685 205.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct