ASTROSAT CZTI

Data Quality Report

Orbit 34239

Creation date: 2022-07-18T13:36:36.796797
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/AS1A11_059T09_9000004888_34239cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34239cztM0_level2_quad_clean.evt
Size (bytes)524,839,68074,485,440
Size500.5 MB 71.0 MB
Events in quadrant A4,294,428457,671
Events in quadrant B3,368,744476,698
Events in quadrant C3,148,875466,093
Events in quadrant D4,683,802443,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165870
B0138660
C0129470
D0179330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58882804.755435%
B58882073.515625%
C5888891.511549%
D58881422.411685%

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 7201 5889 249 249 3.46% 4.23%
B 7201 5889 125 125 1.74% 2.12%
C 7201 5889 66 66 0.92% 1.12%
D 7201 5889 94 94 1.31% 1.60%

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 15 169 1684859 12711.88 662 649 132.5
A 10 83 21908 160.46 662 649 132.5
A 13 6 12574 90.01 662 649 132.5
B 5 172 606813 4782.58 659 644 126.7
B 15 85 39213 304.3 659 644 126.7
B 15 222 28084 216.5 659 644 126.7
C 0 10 261988 1743.52 643 648 149.9
C 15 214 256345 1705.87 643 648 149.9
C 14 254 63202 417.33 643 648 149.9
D 7 223 949928 6049.12 642 624 156.9
D 8 195 688901 4385.82 642 624 156.9
D 2 250 226946 1442.16 642 624 156.9

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