ASTROSAT CZTI

Data Quality Report

Orbit 52992

Creation date: 2025-07-15T17:46:47.673482
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/AS1A13_003T01_9000006486_52992cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52992cztM0_level2_quad_clean.evt
Size (bytes)4,573,342,080331,056,000
Size4.3 GB 315.7 MB
Events in quadrant A68,525,269754,156
Events in quadrant B15,233,2333,249,170
Events in quadrant C32,170,7622,458,864
Events in quadrant D50,977,6401,428,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02245186
B0678426
C01172876
D01728489

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06340
B06340
C06340
D06340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A309932435678.585487%
B309935011.616494%
C30994510416.467703%
D309931468047.365534%

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 37294 30995 20771 20771 55.70% 67.01%
B 37294 30998 123 123 0.33% 0.40%
C 37295 31000 4644 4644 12.45% 14.98%
D 37294 30997 11854 11854 31.79% 38.24%

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 9 191 50779721 100288.9 2006 1954 506.3
A 15 190 5716749 11287.04 2006 1954 506.3
A 4 249 1748678 3449.88 2006 1954 506.3
B 10 254 549923 782.19 3291 3178 699.0
B 10 63 354434 502.52 3291 3178 699.0
B 10 247 230002 324.5 3291 3178 699.0
C 1 241 6775487 8321.94 2971 2943 813.8
C 7 80 3440013 4223.39 2971 2943 813.8
C 9 38 2600813 3192.2 2971 2943 813.8
D 2 62 17483504 25117.36 2427 2321 696.0
D 0 5 11282554 16207.69 2427 2321 696.0
D 8 176 7616061 10939.59 2427 2321 696.0

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