ASTROSAT CZTI

Data Quality Report

Orbit 20210927_C06_002T06_9000004708_level2

Creation date: 2025-12-29T09:38:16.727391
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/AS1C06_002T06_9000004708cztM0_level2.fits modeM0/AS1C06_002T06_9000004708cztM0_level2_quad_clean.evt
Size (bytes)74,669,76028,342,080
Size71.2 MB 27.0 MB
Events in quadrant A485,862102,058
Events in quadrant B426,10692,505
Events in quadrant C471,84297,189
Events in quadrant D405,88893,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144520
B0286810
C0154590
D0195780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6768751.108156%
B6768109816.223404%
C67682243.309693%
D67684106.057920%

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 8113 6768 0 0 0.00% 0.00%
B 8113 6768 0 0 0.00% 0.00%
C 8113 6768 0 0 0.00% 0.00%
D 8113 6768 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 29 494 11.36 126 121 32.8
A 9 19 375 7.74 126 121 32.8
A 7 110 373 7.68 126 121 32.8
B 2 9 361 10.3 113 109 24.5
B 5 128 295 7.61 113 109 24.5
B 2 8 294 7.56 113 109 24.5
C 1 81 365 7.36 125 119 33.4
C 1 80 326 6.19 125 119 33.4
C 3 126 321 6.04 125 119 33.4
D 6 38 317 6.63 116 106 31.8
D 6 231 313 6.51 116 106 31.8
D 15 46 286 5.66 116 106 31.8

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