ASTROSAT CZTI

Data Quality Report

Orbit 20180408_G08_070T01_9000002028_level2

Creation date: 2025-11-21T15:39:35.633206
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/AS1G08_070T01_9000002028cztM0_level2.fits modeM0/AS1G08_070T01_9000002028cztM0_level2_quad_clean.evt
Size (bytes)1,655,242,5601,437,575,040
Size1.5 GB 1.3 GB
Events in quadrant A10,241,8588,465,676
Events in quadrant B9,853,6289,012,734
Events in quadrant C9,994,6547,666,006
Events in quadrant D8,437,8566,794,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034420
B034420
C034420
D034420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03530770
B03843960
C03575830
D04862590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16929425941.532246%
B16929445102.664005%
C16929418421.088048%
D16929494905.605633%

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 194224 169290 0 0 0.00% 0.00%
B 194224 169271 0 0 0.00% 0.00%
C 194224 169294 0 0 0.00% 0.00%
D 194224 169130 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 10162 11.55 2663 2485 664.8
A 7 110 8286 8.73 2663 2485 664.8
A 0 30 7745 7.91 2663 2485 664.8
B 2 9 8412 11.66 2596 2476 508.9
B 3 17 6594 8.09 2596 2476 508.9
B 5 128 6524 7.95 2596 2476 508.9
C 1 80 7498 7.36 2638 2448 685.8
C 1 81 7397 7.22 2638 2448 685.8
C 12 241 6968 6.59 2638 2448 685.8
D 3 14 6129 6.08 2409 2185 648.4
D 6 231 6033 5.93 2409 2185 648.4
D 7 3 5899 5.73 2409 2185 648.4

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