ASTROSAT CZTI

Data Quality Report

Orbit 19786

Creation date: 2024-06-27T18:07:00.416266
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_117T01_9000002958_19786cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19786cztM0_level2_quad_clean.evt
Size (bytes)468,354,240103,296,960
Size446.7 MB 98.5 MB
Events in quadrant A3,185,906690,378
Events in quadrant B3,374,389705,191
Events in quadrant C3,440,075663,413
Events in quadrant D3,773,746647,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132363
B0138692
C0139952
D0152542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6042611.009599%
B60421272.101953%
C60421141.886792%
D60421372.267461%

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 7392 6043 1 1 0.01% 0.02%
B 7392 6043 29 29 0.39% 0.48%
C 7392 6042 13 13 0.18% 0.22%
D 7392 6043 71 71 0.96% 1.17%

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 6 16 26078 155.34 818 802 162.7
A 8 192 7776 42.86 818 802 162.7
A 0 226 7136 38.93 818 802 162.7
B 7 220 85354 564.71 819 803 149.7
B 0 197 29742 193.28 819 803 149.7
B 3 64 21700 139.57 819 803 149.7
C 3 233 219580 1200.78 791 798 182.2
C 14 238 125306 683.36 791 798 182.2
C 7 247 12069 61.86 791 798 182.2
D 1 52 719603 3750.04 796 775 191.7
D 12 218 32813 167.14 796 775 191.7
D 2 234 24730 124.97 796 775 191.7

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