ASTROSAT CZTI

Data Quality Report

Orbit 31922

Creation date: 2024-06-27T20:34:14.158929
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/AS1A10_123T09_9000004654_31922cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31922cztM0_level2_quad_clean.evt
Size (bytes)763,810,56096,177,600
Size728.4 MB 91.7 MB
Events in quadrant A3,259,282662,956
Events in quadrant B6,064,753621,860
Events in quadrant C6,809,654572,158
Events in quadrant D6,535,430576,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141951
B0233221
C0249491
D0241431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6867260.378622%
B68674326.290957%
C6867101514.780836%
D686869710.148515%

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 7202 6868 1 1 0.01% 0.01%
B 7202 6868 244 244 3.39% 3.55%
C 7202 6868 353 353 4.90% 5.14%
D 7203 6869 622 622 8.64% 9.06%

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 12 96 37671 223.79 827 809 164.7
A 13 6 20721 120.89 827 809 164.7
A 13 254 13918 79.58 827 809 164.7
B 6 159 1984388 13179.31 796 776 150.5
B 5 172 549928 3648.62 796 776 150.5
B 4 80 288454 1911.36 796 776 150.5
C 3 233 2671045 15062.11 752 756 177.3
C 0 10 890931 5021.15 752 756 177.3
C 0 207 124416 697.52 752 756 177.3
D 8 195 1367165 7336.03 772 748 186.3
D 12 233 1101355 5908.95 772 748 186.3
D 12 33 414150 2219.48 772 748 186.3

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