ASTROSAT CZTI

Data Quality Report

Orbit 59112

Creation date: 2026-08-31T18:20:23.273788
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_004T02_9000006600_59112cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59112cztM0_level2_quad_clean.evt
Size (bytes)884,675,52085,628,160
Size843.7 MB 81.7 MB
Events in quadrant A5,170,171663,763
Events in quadrant B3,803,664717,116
Events in quadrant C7,095,801626,040
Events in quadrant D16,107,05273,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207110
B0163961
C0263260
D0528540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73574656.320511%
B73574095.559331%
C73577249.840968%
D7357650088.351230%

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 7357 7357 78 78 1.06% 1.06%
B 7357 7357 39 39 0.53% 0.53%
C 7357 7357 372 372 5.06% 5.06%
D 7356 7356 4806 4806 65.33% 65.33%

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 3 14 1625089 8042.2 815 792 202.0
A 10 251 324217 1601.34 815 792 202.0
A 13 248 21367 101.87 815 792 202.0
B 4 236 157866 910.42 811 775 172.5
B 10 128 124658 717.96 811 775 172.5
B 0 197 82760 475.14 811 775 172.5
C 3 233 2444496 11373.11 785 778 214.9
C 13 3 700047 3254.41 785 778 214.9
C 15 201 507854 2359.94 785 778 214.9
D 12 1 14624246 304826.94 163 156 48.0
D 12 110 412286 8590.51 163 156 48.0
D 6 239 289930 6040.1 163 156 48.0

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