ASTROSAT CZTI

Data Quality Report

Orbit 36119

Creation date: 2022-08-10T15:36:57.503951
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/AS1T04_069T01_9000005158_36119cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36119cztM0_level2_quad_clean.evt
Size (bytes)481,337,28064,474,560
Size459.0 MB 61.5 MB
Events in quadrant A2,765,472403,479
Events in quadrant B3,539,251400,238
Events in quadrant C3,264,212398,148
Events in quadrant D4,630,759360,446

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115733
B0140272
C0130122
D0174702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5566150.269493%
B55662234.006468%
C55661152.066116%
D55663095.551563%

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 9543 5568 3 3 0.03% 0.05%
B 9543 5568 150 150 1.57% 2.69%
C 9543 5568 81 81 0.85% 1.45%
D 9543 5568 265 265 2.78% 4.76%

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 10 83 183323 1397.37 651 638 130.7
A 9 143 34899 262.07 651 638 130.7
A 15 223 14231 103.97 651 638 130.7
B 5 172 786159 6376.99 640 623 123.2
B 5 236 137086 1107.81 640 623 123.2
B 0 155 32420 258.13 640 623 123.2
C 0 10 266837 1836.87 624 628 144.9
C 15 214 234655 1614.81 624 628 144.9
C 1 23 205130 1411.09 624 628 144.9
D 1 52 1005492 6682.65 615 600 150.4
D 10 203 717044 4764.44 615 600 150.4
D 12 233 138197 915.04 615 600 150.4

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