ASTROSAT CZTI

Data Quality Report

Orbit 58821

Creation date: 2026-08-11T23:10:23.022304
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_106T01_9000006596_58821cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58821cztM0_level2_quad_clean.evt
Size (bytes)530,746,56093,012,480
Size506.2 MB 88.7 MB
Events in quadrant A3,129,357629,682
Events in quadrant B4,451,104634,281
Events in quadrant C5,021,067560,473
Events in quadrant D6,543,111540,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139021
B0177701
C0195351
D0239421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467831.283439%
B64684997.714904%
C64686149.492888%
D64685288.163265%

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 6882 6468 20 20 0.29% 0.31%
B 6883 6469 259 259 3.76% 4.00%
C 6883 6469 549 549 7.98% 8.49%
D 6883 6469 536 536 7.79% 8.29%

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 2 143 86049 473.62 725 708 180.2
A 13 248 51190 280.16 725 708 180.2
A 15 233 50152 274.4 725 708 180.2
B 4 171 670677 4442.69 699 674 150.8
B 4 201 322978 2137.15 699 674 150.8
B 10 247 226095 1494.73 699 674 150.8
C 6 223 1261193 6633.63 688 681 190.0
C 9 38 574254 3018.51 688 681 190.0
C 13 3 285972 1501.39 688 681 190.0
D 12 110 2840814 14365.2 693 661 197.7
D 12 248 596863 3015.53 693 661 197.7
D 7 238 79776 400.16 693 661 197.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct