ASTROSAT CZTI

Data Quality Report

Orbit 20190324_T03_094T01_9000002816_level2

Creation date: 2025-11-28T23:13:19.429163
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/AS1T03_094T01_9000002816cztM0_level2.fits modeM0/AS1T03_094T01_9000002816cztM0_level2_quad_clean.evt
Size (bytes)1,472,627,5201,207,422,720
Size1.4 GB 1.1 GB
Events in quadrant A9,107,1386,824,755
Events in quadrant B8,755,4406,943,397
Events in quadrant C8,909,1626,564,306
Events in quadrant D7,523,0105,933,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030640
B030640
C030640
D030640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03337380
B03325540
C03265790
D04239290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15032335172.339629%
B15032327731.844694%
C15032332442.158020%
D15032392406.146764%

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 173867 150323 0 0 0.00% 0.00%
B 173867 150318 0 0 0.00% 0.00%
C 173867 150312 0 0 0.00% 0.00%
D 173867 150217 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 7533 9.14 2373 2223 581.2
A 7 110 7519 9.11 2373 2223 581.2
A 9 19 6767 7.82 2373 2223 581.2
B 2 9 7019 10.67 2318 2213 450.5
B 2 8 5815 7.99 2318 2213 450.5
B 3 17 5773 7.9 2318 2213 450.5
C 1 80 6797 7.68 2348 2189 599.8
C 1 81 6731 7.57 2348 2189 599.8
C 12 241 6102 6.52 2348 2189 599.8
D 10 190 5677 6.54 2152 1960 568.7
D 3 14 5602 6.4 2152 1960 568.7
D 10 189 5230 5.75 2152 1960 568.7

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