ASTROSAT CZTI

Data Quality Report

Orbit 29557

Creation date: 2024-06-27T20:05:27.801357
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/AS1C05_019T01_9000004264_29557cztM0_level2.evt modeM0/AS1C05_019T01_9000004264_29557cztM0_level2_quad_clean.evt
Size (bytes)556,240,320115,565,760
Size530.5 MB 110.2 MB
Events in quadrant A3,025,251801,341
Events in quadrant B3,352,090840,698
Events in quadrant C3,392,436755,599
Events in quadrant D6,661,737675,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129322
B0139162
C0140122
D0238563

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101180.295034%
B6101410.672021%
C610165710.768726%
D6100153625.180328%

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 7441 6103 0 0 0.00% 0.00%
B 7441 6103 5 5 0.07% 0.08%
C 7441 6103 0 0 0.00% 0.00%
D 7440 6101 1374 1374 18.47% 22.52%

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 13 254 12112 73.51 782 769 154.3
A 3 137 7174 41.51 782 769 154.3
A 0 226 6701 38.45 782 769 154.3
B 0 189 212167 1438.93 792 775 146.9
B 12 111 17011 110.52 792 775 146.9
B 11 111 15311 98.95 792 775 146.9
C 14 238 278226 1673.21 724 732 165.8
C 14 254 234214 1407.83 724 732 165.8
C 3 233 42060 249.2 724 732 165.8
D 8 195 2371189 14708.93 683 666 161.2
D 13 172 683253 4235.4 683 666 161.2
D 12 33 415802 2575.89 683 666 161.2

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