ASTROSAT CZTI

Data Quality Report

Orbit 20180305_G08_034T01_9000001944_level2

Creation date: 2025-11-19T21:51:25.416128
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/AS1G08_034T01_9000001944cztM0_level2.fits modeM0/AS1G08_034T01_9000001944cztM0_level2_quad_clean.evt
Size (bytes)282,899,520240,243,840
Size269.8 MB 229.1 MB
Events in quadrant A1,692,6881,333,923
Events in quadrant B1,623,9961,347,148
Events in quadrant C1,699,5581,319,383
Events in quadrant D1,463,4341,187,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0662660
B0738640
C0623220
D0714270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303627452.453725%
B3036216415.404782%
C303623871.274620%
D303629052.980700%

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 52055 30363 0 0 0.00% 0.00%
B 52055 30296 0 0 0.00% 0.00%
C 52055 30363 0 0 0.00% 0.00%
D 52055 30357 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 1635 10.96 441 412 111.6
A 7 110 1384 8.71 441 412 111.6
A 9 19 1272 7.7 441 412 111.6
B 2 9 1452 12.09 428 408 86.3
B 14 254 1166 8.78 428 408 86.3
B 2 8 1088 7.88 428 408 86.3
C 12 241 1245 7.09 448 416 116.9
C 2 191 1200 6.71 448 416 116.9
C 9 242 1146 6.25 448 416 116.9
D 4 246 1145 6.68 417 378 114.9
D 3 14 1097 6.26 417 378 114.9
D 7 3 1070 6.02 417 378 114.9

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