ASTROSAT CZTI

Data Quality Report

Orbit 20210708_C06_006T06_9000004520_level2

Creation date: 2025-12-27T09:53:59.166143
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_006T06_9000004520cztM0_level2.fits modeM0/AS1C06_006T06_9000004520cztM0_level2_quad_clean.evt
Size (bytes)84,430,08046,336,320
Size80.5 MB 44.2 MB
Events in quadrant A545,524228,465
Events in quadrant B493,990220,518
Events in quadrant C513,508212,736
Events in quadrant D444,806181,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173690
B0275000
C0183730
D0317400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80432162.685565%
B80436978.665921%
C80434125.122467%
D80437759.635708%

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 10353 8044 0 0 0.00% 0.00%
B 10353 8043 0 0 0.00% 0.00%
C 10353 8040 0 0 0.00% 0.00%
D 10353 8041 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 29 542 11.48 142 134 35.5
A 7 110 477 9.65 142 134 35.5
A 0 30 434 8.44 142 134 35.5
B 2 9 368 8.98 130 125 27.1
B 5 255 334 7.72 130 125 27.1
B 3 17 332 7.65 130 125 27.1
C 9 209 369 6.74 136 128 35.8
C 3 187 364 6.6 136 128 35.8
C 3 126 359 6.46 136 128 35.8
D 15 63 336 6.31 127 117 34.7
D 6 231 323 5.93 127 117 34.7
D 10 113 321 5.87 127 117 34.7

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