ASTROSAT CZTI

Data Quality Report

Orbit 52511

Creation date: 2025-06-13T08:20:50.759235
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/AS1A13_037T01_9000006476_52511cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52511cztM0_level2_quad_clean.evt
Size (bytes)813,651,84082,327,680
Size776.0 MB 78.5 MB
Events in quadrant A2,826,226641,647
Events in quadrant B7,965,010551,145
Events in quadrant C10,064,114413,841
Events in quadrant D8,766,506437,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133212
B0280912
C0343552
D0305202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427270.420103%
B6427158324.630465%
C6427237136.891240%
D6427166925.968570%

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 7632 6428 8 8 0.10% 0.12%
B 7632 6428 1505 1505 19.72% 23.41%
C 7631 6427 2302 2302 30.17% 35.82%
D 7632 6427 1702 1702 22.30% 26.48%

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 11 3 17019 95.11 692 675 171.9
A 4 159 15095 83.91 692 675 171.9
A 4 95 15037 83.57 692 675 171.9
B 10 44 3253058 24626.73 620 599 132.1
B 10 254 1587422 12014.99 620 599 132.1
B 4 81 225420 1702.28 620 599 132.1
C 15 224 4716698 30458.76 557 553 154.8
C 15 233 1751888 11310.83 557 553 154.8
C 13 3 508163 3278.35 557 553 154.8
D 15 93 4501165 26985.64 581 555 166.8
D 8 176 442695 2651.07 581 555 166.8
D 6 42 290309 1737.36 581 555 166.8

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