ASTROSAT CZTI

Data Quality Report

Orbit 52487

Creation date: 2025-06-25T18:49:36.662391
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_037T01_9000006476_52487cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52487cztM0_level2_quad_clean.evt
Size (bytes)960,376,32077,872,320
Size915.9 MB 74.3 MB
Events in quadrant A4,230,256629,810
Events in quadrant B5,040,243696,179
Events in quadrant C7,438,716534,807
Events in quadrant D18,293,0284,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176553
B0198850
C0269860
D0592683

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70663414.825927%
B70692433.437544%
C7069115416.324798%
D7068703199.476514%

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 7068 7067 301 301 4.26% 4.26%
B 7069 7069 145 145 2.05% 2.05%
C 7069 7069 1012 1012 14.32% 14.32%
D 7067 7067 6783 6783 95.98% 95.98%

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 8 26 1118552 6188.64 741 722 180.6
A 11 3 48288 263.34 741 722 180.6
A 4 3 38282 207.94 741 722 180.6
B 7 0 695485 4303.42 742 716 161.4
B 10 44 556354 3441.64 742 716 161.4
B 10 254 516616 3195.5 742 716 161.4
C 15 248 2266461 12394.41 671 666 182.8
C 2 12 814997 4454.57 671 666 182.8
C 15 224 589059 3218.64 671 666 182.8
D 15 93 16699727 246035.51 236 225 67.9
D 6 42 246865 3633.77 236 225 67.9
D 12 6 102966 1513.69 236 225 67.9

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