ASTROSAT CZTI

Data Quality Report

Orbit 58828

Creation date: 2026-08-12T13:12:35.944284
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_58828cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58828cztM0_level2_quad_clean.evt
Size (bytes)2,266,070,400401,135,040
Size2.1 GB 382.6 MB
Events in quadrant A15,551,2412,665,259
Events in quadrant B17,308,8132,808,419
Events in quadrant C19,045,1432,484,719
Events in quadrant D29,774,4362,224,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0662406
B0710255
C0766935
D01082835

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285298082.832206%
B2853014585.110410%
C2853019056.677182%
D28530347612.183666%

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 31424 28535 459 459 1.46% 1.61%
B 31425 28536 744 744 2.37% 2.61%
C 31425 28536 1496 1496 4.76% 5.24%
D 31425 28536 3121 3121 9.93% 10.94%

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 15 233 1699751 2196.58 3144 3063 772.4
A 13 248 584775 753.1 3144 3063 772.4
A 10 251 447312 575.14 3144 3063 772.4
B 2 247 2323171 3528.0 3078 2959 657.7
B 5 185 502079 758.94 3078 2959 657.7
B 4 236 482933 729.82 3078 2959 657.7
C 15 164 3883950 4757.01 2996 2974 815.8
C 13 3 1352740 1654.44 2996 2974 815.8
C 7 64 659823 805.12 2996 2974 815.8
D 12 110 16902882 20255.91 2945 2820 834.3
D 12 248 308419 366.28 2945 2820 834.3
D 7 222 205444 242.86 2945 2820 834.3

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