ASTROSAT CZTI

Data Quality Report

Orbit 20200219_C05_002T06_9000003522_level2

Creation date: 2025-12-09T11:36:29.252546
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/AS1C05_002T06_9000003522cztM0_level2.fits modeM0/AS1C05_002T06_9000003522cztM0_level2_quad_clean.evt
Size (bytes)78,215,04046,022,400
Size74.6 MB 43.9 MB
Events in quadrant A489,726226,322
Events in quadrant B476,880233,662
Events in quadrant C484,994225,870
Events in quadrant D405,156194,562

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153390
B0156960
C0159560
D0281390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7355540.734194%
B7355690.938137%
C73551061.441196%
D73556969.462950%

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 8705 7354 0 0 0.00% 0.00%
B 8705 7354 0 0 0.00% 0.00%
C 8705 7354 0 0 0.00% 0.00%
D 8705 7354 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 29 439 9.69 127 120 32.9
A 7 110 405 8.66 127 120 32.9
A 9 19 355 7.14 127 120 32.9
B 2 9 370 9.28 126 121 26.8
B 5 128 326 7.64 126 121 26.8
B 5 225 314 7.19 126 121 26.8
C 1 80 356 6.85 128 121 34.3
C 1 81 354 6.79 128 121 34.3
C 9 209 346 6.56 128 121 34.3
D 4 246 299 5.94 115 106 32.5
D 10 189 292 5.72 115 106 32.5
D 6 231 291 5.69 115 106 32.5

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