ASTROSAT CZTI

Data Quality Report

Orbit 20180514_C03_022T01_9000002098_level2

Creation date: 2025-11-22T09:03:04.172860
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/AS1C03_022T01_9000002098cztM0_level2.fits modeM0/AS1C03_022T01_9000002098cztM0_level2_quad_clean.evt
Size (bytes)727,404,480647,412,480
Size693.7 MB 617.4 MB
Events in quadrant A4,522,7983,901,459
Events in quadrant B4,234,7703,805,918
Events in quadrant C4,362,0483,546,567
Events in quadrant D3,678,4103,124,882

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01637170
B01891450
C01611150
D02248100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015460
B015460
C015460
D015460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A762589091.192006%
B7625839735.209945%
C762586450.845813%
D7625867198.810879%

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 88228 76255 0 0 0.00% 0.00%
B 88228 76230 0 0 0.00% 0.00%
C 88228 76259 0 0 0.00% 0.00%
D 88228 76185 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 4374 11.16 1179 1100 293.3
A 7 110 3643 8.67 1179 1100 293.3
A 9 19 3439 7.97 1179 1100 293.3
B 2 9 3654 11.62 1117 1061 223.1
B 3 17 2857 8.05 1117 1061 223.1
B 3 80 2800 7.79 1117 1061 223.1
C 1 80 3232 7.28 1151 1068 297.1
C 1 81 3163 7.05 1151 1068 297.1
C 12 241 3043 6.65 1151 1068 297.1
D 6 231 2681 6.05 1051 953 285.7
D 3 14 2660 5.97 1051 953 285.7
D 3 31 2578 5.69 1051 953 285.7

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