ASTROSAT CZTI

Data Quality Report

Orbit 20160930_G05_178T01_9000000692_level2

Creation date: 2025-11-06T17:52:24.106475
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/AS1G05_178T01_9000000692cztM0_level2.fits modeM0/AS1G05_178T01_9000000692cztM0_level2_quad_clean.evt
Size (bytes)53,435,52048,280,320
Size51.0 MB 46.0 MB
Events in quadrant A321,848278,449
Events in quadrant B307,334276,807
Events in quadrant C319,876266,484
Events in quadrant D269,532239,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122530
B0135410
C0119550
D0156440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01200
C01140
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5728781.361732%
B57061753.066947%
C5724480.838574%
D57092223.888597%

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 7032 5825 0 0 0.00% 0.00%
B 7032 5820 0 0 0.00% 0.00%
C 7032 5826 0 0 0.00% 0.00%
D 7032 5822 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 14 188 334 10.79 83 78 23.7
A 0 29 303 9.48 83 78 23.7
A 9 19 260 7.67 83 78 23.7
B 2 9 274 10.65 81 77 18.5
B 2 8 228 8.16 81 77 18.5
B 12 226 228 8.16 81 77 18.5
C 1 81 245 6.9 84 78 24.2
C 9 188 234 6.45 84 78 24.2
C 1 65 232 6.36 84 78 24.2
D 11 82 202 5.93 76 69 22.4
D 6 38 199 5.79 76 69 22.4
D 1 31 196 5.66 76 69 22.4

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