ASTROSAT CZTI

Data Quality Report

Orbit 20160501_G05_221T01_9000000438_level2

Creation date: 2025-10-29T04:19:56.023103
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/AS1G05_221T01_9000000438cztM0_level2.fits modeM0/AS1G05_221T01_9000000438cztM0_level2_quad_clean.evt
Size (bytes)1,403,671,6801,603,512,000
Size1.3 GB 1.5 GB
Events in quadrant A8,405,07210,170,576
Events in quadrant B8,278,99810,251,728
Events in quadrant C7,528,3028,035,338
Events in quadrant D7,200,3189,030,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032860
B032860
C032860
D032860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03658610
B03615030
C06174080
D03601550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16174750883.145653%
B16174729251.808380%
C1616943479021.515950%
D16159628671.774178%

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 183346 161683 0 0 0.00% 0.00%
B 183346 161717 0 0 0.00% 0.00%
C 183346 161469 0 0 0.00% 0.00%
D 183346 161562 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 8244 11.04 2184 2034 562.5
A 14 188 8239 11.03 2184 2034 562.5
A 7 110 7343 9.44 2184 2034 562.5
B 2 9 7177 11.73 2187 2082 434.2
B 12 226 6274 9.65 2187 2082 434.2
B 14 254 5891 8.77 2187 2082 434.2
C 1 80 5498 6.97 1991 1837 525.4
C 1 81 5387 6.76 1991 1837 525.4
C 12 241 5305 6.6 1991 1837 525.4
D 1 19 5325 6.33 2059 1866 546.8
D 6 231 5224 6.14 2059 1866 546.8
D 1 3 5213 6.12 2059 1866 546.8

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