ASTROSAT CZTI

Data Quality Report

Orbit 25668

Creation date: 2024-06-27T19:20:12.749208
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/AS1A09_016T03_9000003740_25668cztM0_level2.evt modeM0/AS1A09_016T03_9000003740_25668cztM0_level2_quad_clean.evt
Size (bytes)618,379,20095,610,240
Size589.7 MB 91.2 MB
Events in quadrant A4,538,324587,757
Events in quadrant B4,411,921594,153
Events in quadrant C4,337,464563,098
Events in quadrant D4,855,674552,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184120
B0183040
C0181390
D0196620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86104194.866434%
B86104515.238095%
C86104124.785134%
D86113313.843921%

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 9200 8611 0 0 0.00% 0.00%
B 9200 8610 1 1 0.01% 0.01%
C 9200 8612 0 0 0.00% 0.00%
D 9201 8613 7 7 0.08% 0.08%

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 8 192 194441 853.28 1114 1089 226.6
A 4 2 33341 142.33 1114 1089 226.6
A 13 254 11611 46.43 1114 1089 226.6
B 0 245 46256 209.88 1107 1079 215.3
B 12 111 27467 122.59 1107 1079 215.3
B 11 111 25092 111.56 1107 1079 215.3
C 14 238 166886 655.26 1063 1065 253.1
C 3 233 21238 79.72 1063 1065 253.1
C 13 61 7199 24.24 1063 1065 253.1
D 8 195 562521 2133.95 1080 1045 263.1
D 1 52 183857 694.8 1080 1045 263.1
D 2 234 36492 134.72 1080 1045 263.1

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