ASTROSAT CZTI

Data Quality Report

Orbit 57635

Creation date: 2026-05-25T09:28:47.450073
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_070T08_9000006576_57635cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57635cztM0_level2_quad_clean.evt
Size (bytes)912,096,000129,890,880
Size869.8 MB 123.9 MB
Events in quadrant A8,521,490840,214
Events in quadrant B5,273,245916,466
Events in quadrant C7,398,864763,542
Events in quadrant D11,724,297655,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0329382
B0236162
C0297472
D0422712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109195284.835608%
B109191231.126477%
C109185094.662026%
D10918219820.131892%

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 12688 11205 427 427 3.37% 3.81%
B 12688 11205 39 39 0.31% 0.35%
C 12687 11203 389 389 3.07% 3.47%
D 12687 11204 2112 2112 16.65% 18.85%

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 2301559 8081.14 1149 1116 284.7
A 4 249 1284393 4507.98 1149 1116 284.7
A 3 14 210571 735.79 1149 1116 284.7
B 0 213 225230 909.98 1152 1109 246.3
B 5 172 171926 693.55 1152 1109 246.3
B 10 247 88116 353.27 1152 1109 246.3
C 15 224 2445826 8122.77 1109 1101 301.0
C 10 22 307524 1018.11 1109 1101 301.0
C 14 254 123308 406.04 1109 1101 301.0
D 15 142 4092761 14473.48 1001 956 282.7
D 8 240 1634014 5776.43 1001 956 282.7
D 8 160 914861 3232.65 1001 956 282.7

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