ASTROSAT CZTI

Data Quality Report

Orbit 20170727_G07_028T01_9000001406_level2

Creation date: 2025-11-15T15:17:48.060452
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/AS1G07_028T01_9000001406cztM0_level2.fits modeM0/AS1G07_028T01_9000001406cztM0_level2_quad_clean.evt
Size (bytes)123,586,560136,137,600
Size117.9 MB 129.8 MB
Events in quadrant A735,530829,907
Events in quadrant B713,002840,906
Events in quadrant C727,876789,458
Events in quadrant D629,336725,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278190
B0279930
C0276860
D0287300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135661801.326847%
B135661801.326847%
C135661250.921421%
D135661361.002506%

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 14626 13567 0 0 0.00% 0.00%
B 14626 13566 0 0 0.00% 0.00%
C 14626 13566 0 0 0.00% 0.00%
D 14626 13565 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 29 733 10.95 190 178 50.7
A 14 188 729 10.87 190 178 50.7
A 14 204 680 9.9 190 178 50.7
B 2 9 597 10.22 187 177 41.1
B 3 17 500 7.86 187 177 41.1
B 14 254 499 7.84 187 177 41.1
C 2 191 531 6.74 191 177 52.5
C 1 80 516 6.45 191 177 52.5
C 12 241 507 6.28 191 177 52.5
D 1 19 492 6.6 178 161 50.2
D 6 231 460 5.96 178 161 50.2
D 3 14 456 5.88 178 161 50.2

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