ASTROSAT CZTI

Data Quality Report

Orbit 33957

Creation date: 2024-06-27T20:54:42.292130
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/AS1T04_074T01_9000004852_33957cztM0_level2.evt modeM0/AS1T04_074T01_9000004852_33957cztM0_level2_quad_clean.evt
Size (bytes)371,859,84039,867,840
Size354.6 MB 38.0 MB
Events in quadrant A1,935,749243,296
Events in quadrant B2,908,813229,137
Events in quadrant C2,471,673238,393
Events in quadrant D3,676,950217,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080111
B0110491
C096491
D0136801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394740.101343%
B39472967.499367%
C3947461.165442%
D39472817.119331%

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 3947 3947 0 0 0.00% 0.00%
B 3947 3947 193 193 4.89% 4.89%
C 3947 3947 34 34 0.86% 0.86%
D 3947 3947 238 238 6.03% 6.03%

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 13 6 8159 76.72 497 487 100.0
A 10 83 8008 75.21 497 487 100.0
A 13 254 7216 67.29 497 487 100.0
B 5 172 933958 10100.06 481 468 92.4
B 0 229 25033 265.79 481 468 92.4
B 3 112 12350 128.56 481 468 92.4
C 3 233 265214 2401.0 476 482 110.3
C 15 214 168571 1524.49 476 482 110.3
C 0 10 151480 1369.48 476 482 110.3
D 8 195 827653 7295.13 459 447 113.4
D 8 230 564233 4972.03 459 447 113.4
D 7 238 179070 1575.28 459 447 113.4

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