ASTROSAT CZTI

Data Quality Report

Orbit 56583

Creation date: 2026-03-14T09:44:59.369781
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/AS1A14_083T06_9000006558_56583cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56583cztM0_level2_quad_clean.evt
Size (bytes)626,379,840119,900,160
Size597.4 MB 114.3 MB
Events in quadrant A5,301,887790,284
Events in quadrant B6,217,310812,638
Events in quadrant C4,563,638768,450
Events in quadrant D6,446,750670,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217523
B0245593
C0199353
D0250633

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84615206.145846%
B84618199.679707%
C84622583.048925%
D84618269.762439%

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 9316 8464 337 337 3.62% 3.98%
B 9316 8462 320 320 3.43% 3.78%
C 9317 8464 75 75 0.80% 0.89%
D 9316 8464 521 521 5.59% 6.16%

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 64 783105 3421.02 928 906 228.6
A 4 249 406414 1773.53 928 906 228.6
A 12 3 144980 630.12 928 906 228.6
B 5 185 2390962 12259.35 914 881 195.0
B 8 128 39849 199.88 914 881 195.0
B 4 21 35665 178.42 914 881 195.0
C 5 250 334282 1324.08 926 916 251.8
C 1 12 277696 1099.33 926 916 251.8
C 12 252 144699 571.09 926 916 251.8
D 6 239 1734397 7000.05 884 842 247.6
D 5 222 289053 1163.79 884 842 247.6
D 2 249 171930 690.85 884 842 247.6

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