ASTROSAT CZTI

Data Quality Report

Orbit 20180710_T02_060T01_9000002216_level2

Creation date: 2025-11-23T10:26:21.047981
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/AS1T02_060T01_9000002216cztM0_level2.fits modeM0/AS1T02_060T01_9000002216cztM0_level2_quad_clean.evt
Size (bytes)1,972,679,0401,727,519,040
Size1.8 GB 1.6 GB
Events in quadrant A12,124,94810,104,691
Events in quadrant B11,667,90210,140,553
Events in quadrant C11,743,6689,442,020
Events in quadrant D10,218,7968,645,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04326160
B04579420
C05005290
D04562060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03230
B03230
C03230
D03230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041620
B041620
C041620
D041620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20416928491.395413%
B20416952412.566991%
C20416932011.567819%
D20416957552.818743%

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 236484 204140 0 0 0.00% 0.00%
B 236484 204026 0 0 0.00% 0.00%
C 236484 204143 0 0 0.00% 0.00%
D 236484 203856 0 0 0.00% 0.00%

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 0 29 11758 11.33 3151 2940 778.5
A 7 110 9828 8.85 3151 2940 778.5
A 15 236 9314 8.19 3151 2940 778.5
B 2 9 9918 11.59 3074 2924 603.4
B 3 17 7721 7.95 3074 2924 603.4
B 14 254 7638 7.81 3074 2924 603.4
C 12 241 8100 6.51 3104 2879 802.5
C 2 191 7807 6.14 3104 2879 802.5
C 3 126 7676 5.98 3104 2879 802.5
D 3 14 7423 6.1 2915 2646 782.5
D 6 231 7237 5.87 2915 2646 782.5
D 7 3 7120 5.72 2915 2646 782.5

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