ASTROSAT CZTI

Data Quality Report

Orbit 20200302_A07_101T02_9000003544_level2

Creation date: 2025-12-09T18:15:31.622641
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/AS1A07_101T02_9000003544cztM0_level2.fits modeM0/AS1A07_101T02_9000003544cztM0_level2_quad_clean.evt
Size (bytes)1,333,203,8401,196,985,600
Size1.2 GB 1.1 GB
Events in quadrant A8,492,3347,175,413
Events in quadrant B8,042,9647,174,872
Events in quadrant C8,231,9066,948,540
Events in quadrant D6,504,1065,855,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026420
B026420
C026420
D026420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02792520
B02950080
C02842840
D04782670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13296614051.056661%
B13296426101.962937%
C13296425781.938871%
D1329672238216.832748%

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 155416 132974 0 0 0.00% 0.00%
B 155416 132972 0 0 0.00% 0.00%
C 155416 132972 0 0 0.00% 0.00%
D 155416 130701 0 0 0.00% 0.00%

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 0 29 8125 11.14 2214 2081 542.4
A 7 110 6605 8.34 2214 2081 542.4
A 0 30 6332 7.84 2214 2081 542.4
B 2 9 6521 10.98 2126 2037 408.2
B 2 8 5377 8.18 2126 2037 408.2
B 5 128 5374 8.17 2126 2037 408.2
C 1 80 6283 7.76 2174 2044 546.5
C 1 81 6240 7.68 2174 2044 546.5
C 3 126 5600 6.51 2174 2044 546.5
D 3 14 4737 6.26 1860 1701 485.2
D 15 46 4634 6.05 1860 1701 485.2
D 10 189 4575 5.92 1860 1701 485.2

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