ASTROSAT CZTI

Data Quality Report

Orbit 58108

Creation date: 2026-06-25T00:20:45.690411
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_042T02_9000006586_58108cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58108cztM0_level2_quad_clean.evt
Size (bytes)668,577,60089,812,800
Size637.6 MB 85.7 MB
Events in quadrant A3,181,251677,871
Events in quadrant B11,211,254390,549
Events in quadrant C3,217,457639,868
Events in quadrant D6,609,186535,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143862
B0380361
C0146151
D0243421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6819430.630591%
B6820335349.164223%
C6820350.513196%
D682087212.785924%

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 7679 6820 11 11 0.14% 0.16%
B 7680 6821 3035 3035 39.52% 44.49%
C 7680 6821 21 21 0.27% 0.31%
D 7680 6821 920 920 11.98% 13.49%

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 10 251 106720 564.13 763 744 187.9
A 3 245 41216 215.44 763 744 187.9
A 3 61 29465 152.89 763 744 187.9
B 5 172 5779877 44234.75 605 583 130.7
B 10 128 2794973 21388.28 605 583 130.7
B 5 185 53044 401.54 605 583 130.7
C 15 208 164392 804.62 732 726 203.4
C 9 38 80968 394.49 732 726 203.4
C 12 252 66658 324.14 732 726 203.4
D 12 110 2719955 13741.75 699 670 197.9
D 0 160 823552 4158.39 699 670 197.9
D 8 160 106923 536.94 699 670 197.9

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