ASTROSAT CZTI

Data Quality Report

Orbit 32260

Creation date: 2024-06-27T20:38:11.977610
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/AS1A09_131T01_9000004696_32260cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32260cztM0_level2_quad_clean.evt
Size (bytes)708,906,240111,049,920
Size676.1 MB 105.9 MB
Events in quadrant A3,795,991723,375
Events in quadrant B6,298,027717,487
Events in quadrant C3,987,854707,020
Events in quadrant D6,875,481687,799

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160692
B0241182
C0164752
D0255322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7577831.095420%
B75783114.103985%
C75782283.008709%
D75785156.795988%

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 9327 7579 1 1 0.01% 0.01%
B 9328 7580 85 85 0.91% 1.12%
C 9328 7580 33 33 0.35% 0.44%
D 9328 7580 326 326 3.49% 4.30%

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 14 238 122209 644.0 940 920 188.3
A 0 6 17724 89.22 940 920 188.3
A 13 6 16995 85.35 940 920 188.3
B 6 159 2190680 12554.41 919 894 174.4
B 5 172 347758 1988.63 919 894 174.4
B 0 190 46724 262.75 919 894 174.4
C 0 10 193212 919.71 895 898 209.1
C 14 238 161430 767.72 895 898 209.1
C 3 233 43491 203.69 895 898 209.1
D 8 195 2363963 11129.0 892 866 212.3
D 12 218 373637 1755.56 892 866 212.3
D 12 233 230011 1079.16 892 866 212.3

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