ASTROSAT CZTI

Data Quality Report

Orbit 20210802_C06_010T02_9000004618_level2

Creation date: 2025-12-28T04:59:39.114462
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_010T02_9000004618cztM0_level2.fits modeM0/AS1C06_010T02_9000004618cztM0_level2_quad_clean.evt
Size (bytes)69,701,76051,687,360
Size66.5 MB 49.3 MB
Events in quadrant A441,416288,205
Events in quadrant B418,912289,515
Events in quadrant C441,132287,660
Events in quadrant D374,354263,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134830
B0207070
C0144850
D0170830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01220
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6256360.575448%
B62311672.680148%
C62521542.463212%
D62382403.847387%

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 13247 6292 0 0 0.00% 0.00%
B 13248 6264 0 0 0.00% 0.00%
C 13248 6290 0 0 0.00% 0.00%
D 13247 6258 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 29 420 10.62 115 109 29.3
A 9 19 339 7.86 115 109 29.3
A 0 30 334 7.68 115 109 29.3
B 2 9 315 8.79 111 107 23.7
B 3 80 286 7.56 111 107 23.7
B 13 245 276 7.14 111 107 23.7
C 1 81 359 8.1 116 111 30.6
C 1 80 341 7.51 116 111 30.6
C 3 202 327 7.05 116 111 30.6
D 6 231 291 6.44 107 98 30.0
D 10 189 288 6.34 107 98 30.0
D 10 113 285 6.24 107 98 30.0

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