ASTROSAT CZTI

Data Quality Report

Orbit 53505

Creation date: 2025-08-19T06:40:56.699649
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_002T07_9000006498_53505cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53505cztM0_level2_quad_clean.evt
Size (bytes)1,148,071,68099,838,080
Size1.1 GB 95.2 MB
Events in quadrant A11,769,687644,377
Events in quadrant B7,407,884841,582
Events in quadrant C18,044,209231,705
Events in quadrant D4,627,116721,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408720
B0279750
C0593690
D0199480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8405230227.388459%
B84056667.923855%
C8406617273.423745%
D84061581.879610%

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 8405 8405 2015 2015 23.97% 23.97%
B 8405 8405 300 300 3.57% 3.57%
C 8406 8406 5299 5299 63.04% 63.04%
D 8406 8406 121 121 1.44% 1.44%

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 3 62 5761962 27627.67 846 825 208.5
A 3 63 1235689 5921.82 846 825 208.5
A 15 174 1041271 4989.48 846 825 208.5
B 4 171 1316945 6696.64 911 878 196.5
B 4 206 782041 3974.85 911 878 196.5
B 2 249 568420 2887.86 911 878 196.5
C 7 64 11326431 85393.63 483 479 132.6
C 1 241 1200704 9049.27 483 479 132.6
C 15 224 1046063 7883.33 483 479 132.6
D 3 12 289242 1123.11 904 866 256.8
D 7 110 169848 658.12 904 866 256.8
D 1 0 129884 502.47 904 866 256.8

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