ASTROSAT CZTI

Data Quality Report

Orbit 52515

Creation date: 2025-06-13T16:15:24.481685
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/AS1C09_011T06_9000006478_52515cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52515cztM0_level2_quad_clean.evt
Size (bytes)853,375,68079,375,680
Size813.8 MB 75.7 MB
Events in quadrant A3,653,025663,255
Events in quadrant B4,915,761668,312
Events in quadrant C15,230,30826,191
Events in quadrant D7,251,104562,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161292
B0195542
C0500353
D0264072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69362703.892734%
B69365988.621684%
C6935666096.034607%
D693577911.232877%

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 6976 6938 97 97 1.39% 1.40%
B 6976 6937 339 339 4.86% 4.89%
C 6974 6934 5087 5087 72.94% 73.36%
D 6975 6936 707 707 10.14% 10.19%

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 4 237 280369 1523.55 741 722 183.5
A 8 249 180989 982.11 741 722 183.5
A 3 45 108809 588.87 741 722 183.5
B 10 44 1148398 7498.03 715 688 153.1
B 4 171 373984 2438.76 715 688 153.1
B 10 254 146292 951.24 715 688 153.1
C 15 233 7235727 182687.53 137 135 39.6
C 15 224 7088580 178972.3 137 135 39.6
C 13 3 101427 2557.47 137 135 39.6
D 6 42 2796131 14261.44 692 661 196.0
D 12 17 368785 1878.03 692 661 196.0
D 8 176 230398 1172.03 692 661 196.0

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