ASTROSAT CZTI

Data Quality Report

Orbit 20160511_G05_112T01_9000000452_level2

Creation date: 2025-10-29T09:16:22.471325
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_112T01_9000000452cztM0_level2.fits modeM0/AS1G05_112T01_9000000452cztM0_level2_quad_clean.evt
Size (bytes)1,653,609,6001,754,573,760
Size1.5 GB 1.6 GB
Events in quadrant A9,852,08410,626,907
Events in quadrant B9,527,99410,572,690
Events in quadrant C9,755,07010,115,377
Events in quadrant D8,397,6949,282,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02750
B02740
C02740
D02740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037240
B037240
C037240
D037240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03846160
B04173030
C03967350
D03899230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18313028561.559548%
B18313037192.030798%
C18312925011.365704%
D18312830081.642567%

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 255006 183136 0 0 0.00% 0.00%
B 255006 183135 0 0 0.00% 0.00%
C 255006 183128 0 0 0.00% 0.00%
D 255006 183115 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 9598 10.83 2557 2365 668.2
A 14 188 9419 10.56 2557 2365 668.2
A 7 110 8546 9.25 2557 2365 668.2
B 2 9 8443 11.86 2513 2376 511.6
B 12 226 7037 9.11 2513 2376 511.6
B 5 128 6633 8.32 2513 2376 511.6
C 1 80 7115 6.96 2576 2375 681.2
C 1 81 7110 6.95 2576 2375 681.2
C 12 241 6749 6.42 2576 2375 681.2
D 3 14 6367 6.53 2402 2175 642.3
D 6 231 6240 6.33 2402 2175 642.3
D 3 31 6126 6.15 2402 2175 642.3

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