ASTROSAT CZTI

Data Quality Report

Orbit 53977

Creation date: 2025-09-20T00:50:54.139158
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/AS1A14_041T01_9000006510_53977cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53977cztM0_level2_quad_clean.evt
Size (bytes)761,731,20073,624,320
Size726.4 MB 70.2 MB
Events in quadrant A2,932,665601,643
Events in quadrant B4,526,368626,579
Events in quadrant C8,200,379387,736
Events in quadrant D12,069,931192,138

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131271
B0178211
C0285731
D0400551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6029641.061536%
B60293666.070658%
C6030210834.958541%
D6030407567.578773%

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 7149 6030 36 36 0.50% 0.60%
B 7149 6030 265 265 3.71% 4.39%
C 7150 6031 2015 2015 28.18% 33.41%
D 7150 6030 3578 3578 50.04% 59.34%

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 15 174 173908 1080.59 644 627 160.4
A 3 78 91094 564.16 644 627 160.4
A 12 17 39265 240.95 644 627 160.4
B 0 155 826489 6136.45 633 613 134.6
B 5 250 671509 4984.92 633 613 134.6
B 0 213 361338 2680.27 633 613 134.6
C 1 241 5411924 36579.38 527 521 147.9
C 12 252 275612 1859.53 527 521 147.9
C 15 209 186855 1259.56 527 521 147.9
D 8 176 10139079 102225.57 348 332 99.2
D 6 239 188923 1901.5 348 332 99.2
D 13 46 50230 503.1 348 332 99.2

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