ASTROSAT CZTI

Data Quality Report

Orbit 25908

Creation date: 2024-06-27T19:22:40.733173
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/AS1A07_068T01_9000003756_25908cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25908cztM0_level2_quad_clean.evt
Size (bytes)570,242,880125,112,960
Size543.8 MB 119.3 MB
Events in quadrant A4,770,835859,489
Events in quadrant B3,606,446858,732
Events in quadrant C3,559,238803,724
Events in quadrant D4,881,932802,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188720
B0150250
C0150130
D0191120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66653254.876219%
B6665881.320330%
C66651221.830458%
D66652954.426107%

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 7895 6666 169 169 2.14% 2.54%
B 7895 6666 11 11 0.14% 0.17%
C 7895 6666 0 0 0.00% 0.00%
D 7895 6665 178 178 2.25% 2.67%

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 0 13 1219930 6729.43 921 904 181.1
A 13 254 9312 46.41 921 904 181.1
A 0 226 8029 39.33 921 904 181.1
B 10 245 43218 251.58 902 882 168.3
B 12 111 19975 113.46 902 882 168.3
B 11 111 18413 104.18 902 882 168.3
C 14 238 142999 714.81 867 872 198.8
C 3 233 25228 122.5 867 872 198.8
C 10 22 10805 49.96 867 872 198.8
D 1 52 1440977 6840.12 884 863 210.5
D 7 80 45443 211.74 884 863 210.5
D 2 234 24123 110.48 884 863 210.5

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