ASTROSAT CZTI

Data Quality Report

Orbit 53200

Creation date: 2025-07-29T17:59:14.199675
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_9000006490_53200cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53200cztM0_level2_quad_clean.evt
Size (bytes)927,731,52081,132,480
Size884.8 MB 77.4 MB
Events in quadrant A3,379,747647,381
Events in quadrant B3,766,323689,102
Events in quadrant C10,890,977417,394
Events in quadrant D15,763,121214,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153860
B0161420
C0372221
D0515930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001520.742751%
B70011051.499786%
C7001252536.066276%
D7001477068.133124%

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 7000 7000 37 37 0.53% 0.53%
B 7000 7000 96 96 1.37% 1.37%
C 7001 7001 2617 2617 37.38% 37.38%
D 7001 7001 5102 5102 72.88% 72.88%

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 7 206 177271 981.92 720 701 179.8
A 15 174 113095 625.03 720 701 179.8
A 5 240 60840 334.44 720 701 179.8
B 7 0 237504 1554.82 710 685 152.3
B 2 249 191056 1249.87 710 685 152.3
B 5 185 152057 993.82 710 685 152.3
C 1 241 4752632 28417.84 603 598 167.2
C 15 224 1546956 9247.44 603 598 167.2
C 0 240 1085036 6485.09 603 598 167.2
D 15 125 11125714 80149.35 477 454 138.8
D 10 117 1577538 11361.73 477 454 138.8
D 12 3 392280 2822.82 477 454 138.8

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