ASTROSAT CZTI

Data Quality Report

Orbit 52057

Creation date: 2025-05-13T21:41:15.622395
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/AS1C09_011T06_9000006468_52057cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52057cztM0_level2_quad_clean.evt
Size (bytes)4,166,360,640294,583,680
Size3.9 GB 280.9 MB
Events in quadrant A17,104,8602,597,771
Events in quadrant B40,592,6131,646,438
Events in quadrant C21,806,7162,387,616
Events in quadrant D72,492,135294,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0705985
B01407575
C0856295
D02351805

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289478713.008947%
B289481164840.237668%
C2894824978.625812%
D289482605690.009673%

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 31757 28951 424 424 1.34% 1.46%
B 31758 28953 9152 9152 28.82% 31.61%
C 31758 28954 1947 1947 6.13% 6.72%
D 31757 28947 24869 24869 78.31% 85.91%

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 4 249 587192 787.09 2987 2918 742.3
A 4 3 560667 751.36 2987 2918 742.3
A 15 174 551318 738.76 2987 2918 742.3
B 8 3 16753479 34834.95 2273 2196 480.9
B 12 32 10184183 21173.84 2273 2196 480.9
B 10 254 1459743 3031.02 2273 2196 480.9
C 15 224 6820445 8674.01 2826 2799 786.0
C 13 3 568534 719.78 2826 2799 786.0
C 9 38 507257 641.82 2826 2799 786.0
D 15 94 40186518 94253.23 1389 1319 426.4
D 6 42 8588605 20141.23 1389 1319 426.4
D 12 17 8502596 19939.5 1389 1319 426.4

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