ASTROSAT CZTI

Data Quality Report

Orbit 20170907_A03_033T01_9000001524_level2

Creation date: 2025-11-17T00:37:53.815579
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/AS1A03_033T01_9000001524cztM0_level2.fits modeM0/AS1A03_033T01_9000001524cztM0_level2_quad_clean.evt
Size (bytes)202,996,800145,051,200
Size193.6 MB 138.3 MB
Events in quadrant A1,224,864731,900
Events in quadrant B1,125,958722,900
Events in quadrant C1,235,422737,470
Events in quadrant D1,078,914719,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0465710
B0491530
C0452500
D0545270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0590
C0590
D0600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04760
C04590
D04630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215621790.830164%
B203576563.222479%
C216121010.467333%
D222384231.902149%

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 31753 23586 0 0 0.00% 0.00%
B 31753 22569 0 0 0.00% 0.00%
C 31753 23806 0 0 0.00% 0.00%
D 31753 23538 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 1359 13.4 318 300 79.0
A 0 29 1182 11.16 318 300 79.0
A 14 204 1083 9.91 318 300 79.0
B 2 9 950 10.97 297 284 60.7
B 3 80 785 8.26 297 284 60.7
B 5 128 743 7.56 297 284 60.7
C 1 81 913 7.09 325 303 86.1
C 1 80 909 7.04 325 303 86.1
C 12 241 904 6.98 325 303 86.1
D 6 231 849 6.74 307 279 84.5
D 6 38 827 6.48 307 279 84.5
D 7 5 797 6.13 307 279 84.5

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