ASTROSAT CZTI

Data Quality Report

Orbit 20210827_C06_010T03_9000004672_level2

Creation date: 2025-12-28T10:09:29.104349
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/AS1C06_010T03_9000004672cztM0_level2.fits modeM0/AS1C06_010T03_9000004672cztM0_level2_quad_clean.evt
Size (bytes)187,816,320170,259,840
Size179.1 MB 162.4 MB
Events in quadrant A1,221,0561,070,457
Events in quadrant B1,086,310998,632
Events in quadrant C1,133,190966,434
Events in quadrant D999,102872,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375440
B0629830
C0443280
D0605500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180972621.447754%
B1809715218.404708%
C180979875.453943%
D1809711766.498315%

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 21446 18093 0 0 0.00% 0.00%
B 21445 18074 0 0 0.00% 0.00%
C 21445 18088 0 0 0.00% 0.00%
D 21446 18053 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 1215 11.78 318 303 77.4
A 0 30 977 8.7 318 303 77.4
A 7 110 970 8.61 318 303 77.4
B 2 9 874 10.33 289 279 57.6
B 3 80 743 8.06 289 279 57.6
B 5 128 737 7.95 289 279 57.6
C 12 241 808 6.81 301 286 76.6
C 3 187 799 6.7 301 286 76.6
C 3 126 752 6.08 301 286 76.6
D 6 231 757 6.3 286 262 78.5
D 10 189 742 6.11 286 262 78.5
D 7 3 731 5.97 286 262 78.5

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