ASTROSAT CZTI

Data Quality Report

Orbit 56298

Creation date: 2026-02-23T07:06:45.856999
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_049T01_9000006552_56298cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56298cztM0_level2_quad_clean.evt
Size (bytes)1,112,132,160120,536,640
Size1.0 GB 115.0 MB
Events in quadrant A19,903,857403,530
Events in quadrant B5,495,292975,528
Events in quadrant C9,254,078746,910
Events in quadrant D5,738,388828,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660333
B0236462
C0346352
D0239782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10019615061.383372%
B100202932.924152%
C10020172417.205589%
D100201821.816367%

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 11383 10018 5952 5952 52.29% 59.41%
B 11385 10021 198 198 1.74% 1.98%
C 11385 10020 1445 1445 12.69% 14.42%
D 11385 10022 165 165 1.45% 1.65%

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 15 32 14608355 82062.59 704 685 178.0
A 4 95 691001 3878.04 704 685 178.0
A 4 206 470034 2636.7 704 685 178.0
B 5 185 698951 3168.06 1040 1003 220.3
B 0 231 223623 1010.49 1040 1003 220.3
B 0 213 113502 510.64 1040 1003 220.3
C 15 198 2204194 8511.73 943 936 258.8
C 5 250 1075710 4152.12 943 936 258.8
C 12 252 857327 3308.45 943 936 258.8
D 2 249 591475 2042.75 1018 973 289.1
D 8 129 363776 1255.06 1018 973 289.1
D 2 31 147962 508.49 1018 973 289.1

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