ASTROSAT CZTI

Data Quality Report

Orbit 20490

Creation date: 2024-06-27T18:16:13.871956
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/AS1A05_176T03_9000003028_20490cztM0_level2.evt modeM0/AS1A05_176T03_9000003028_20490cztM0_level2_quad_clean.evt
Size (bytes)512,144,64088,735,680
Size488.4 MB 84.6 MB
Events in quadrant A3,055,471581,716
Events in quadrant B3,372,973583,769
Events in quadrant C3,026,331561,202
Events in quadrant D5,629,968522,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132571
B0140601
C0128691
D0210334

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277861.370081%
B6278651.035362%
C6278791.258363%
D627766210.546439%

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 7112 6277 31 31 0.44% 0.49%
B 7113 6278 9 9 0.13% 0.14%
C 7113 6278 1 1 0.01% 0.02%
D 7112 6277 541 541 7.61% 8.62%

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 5 16 110796 716.17 750 734 153.7
A 12 96 37395 238.55 750 734 153.7
A 9 143 9813 59.08 750 734 153.7
B 0 197 132112 905.67 749 730 145.1
B 0 189 113221 775.44 749 730 145.1
B 0 190 69844 476.43 749 730 145.1
C 14 238 111830 655.11 721 722 169.6
C 3 233 89810 525.27 721 722 169.6
C 0 207 15180 85.24 721 722 169.6
D 7 38 662686 3872.94 710 690 170.9
D 5 222 641538 3749.21 710 690 170.9
D 7 238 522717 3054.06 710 690 170.9

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