ASTROSAT CZTI

Data Quality Report

Orbit 20190923_A06_009T05_9000003196_level2

Creation date: 2025-12-03T22:04:16.434994
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/AS1A06_009T05_9000003196cztM0_level2.fits modeM0/AS1A06_009T05_9000003196cztM0_level2_quad_clean.evt
Size (bytes)205,606,080165,294,720
Size196.1 MB 157.6 MB
Events in quadrant A1,271,336931,440
Events in quadrant B1,215,836938,462
Events in quadrant C1,246,102900,874
Events in quadrant D1,047,220787,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430600
B0445710
C0428170
D0620160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209951290.614432%
B209951520.723982%
C209951720.819243%
D2099515397.330317%

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 24710 20995 0 0 0.00% 0.00%
B 24710 20995 0 0 0.00% 0.00%
C 24710 20995 0 0 0.00% 0.00%
D 24710 20980 0 0 0.00% 0.00%

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 29 1210 10.79 331 311 83.3
A 7 110 1006 8.34 331 311 83.3
A 0 30 959 7.77 331 311 83.3
B 2 9 982 10.5 322 309 64.1
B 2 8 831 8.15 322 309 64.1
B 14 254 809 7.8 322 309 64.1
C 9 209 817 6.01 329 309 84.5
C 3 235 814 5.97 329 309 84.5
C 3 126 808 5.9 329 309 84.5
D 6 231 803 6.54 299 273 81.1
D 3 14 783 6.29 299 273 81.1
D 6 67 733 5.67 299 273 81.1

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