ASTROSAT CZTI

Data Quality Report

Orbit 20250901_A14_022T04_9000006506_level2

Creation date: 2025-09-18T05:21:27.015016
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/AS1A14_022T04_9000006506cztM0_level2.fits modeM0/AS1A14_022T04_9000006506cztM0_level2_quad_clean.evt
Size (bytes)4,290,566,4001,714,317,120
Size4.0 GB 1.6 GB
Events in quadrant A14,614,4961,282,375
Events in quadrant B27,983,3103,957,611
Events in quadrant C24,213,3842,858,029
Events in quadrant D21,547,2402,558,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041718650
B014090050
C026529890
D024144080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122940
B0122980
C0122960
D0122960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07050
B07050
C07050
D07050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60135644422873.871051%
B601752183663.052088%
C60165715582225.898809%
D60159412812921.298251%

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 690877 565705 0 0 0.00% 0.00%
B 690878 601794 0 0 0.00% 0.00%
C 690878 597727 0 0 0.00% 0.00%
D 690875 588699 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 16703 10.18 3857 3562 1290.3
A 9 255 15248 9.06 3857 3562 1290.3
A 14 204 13541 7.73 3857 3562 1290.3
B 2 9 32331 14.75 7417 7015 1716.4
B 2 8 28768 12.67 7417 7015 1716.4
B 3 25 23379 9.53 7417 7015 1716.4
C 2 31 19452 6.08 6509 5915 2226.7
C 3 203 18843 5.81 6509 5915 2226.7
C 7 221 18722 5.75 6509 5915 2226.7
D 6 218 27815 10.9 6189 5496 2047.3
D 15 11 21316 7.73 6189 5496 2047.3
D 3 30 19747 6.96 6189 5496 2047.3

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