ASTROSAT CZTI

Data Quality Report

Orbit 20160331_T01_112T01_9000000406_level2

Creation date: 2025-10-28T22:09:43.941361
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/AS1T01_112T01_9000000406cztM0_level2.fits modeM0/AS1T01_112T01_9000000406cztM0_level2_quad_clean.evt
Size (bytes)1,851,445,440537,361,920
Size1.7 GB 512.5 MB
Events in quadrant A11,055,600573,737
Events in quadrant B10,825,020563,920
Events in quadrant C10,922,080559,906
Events in quadrant D9,208,132502,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04379670
B04431300
C04410320
D04764230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041720
B041720
C041720
D041720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02950
B02950
C02950
D02950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20519237711.837791%
B20519237841.844126%
C20519231741.546844%
D20519251112.490838%

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 252952 205181 0 0 0.00% 0.00%
B 252952 205185 0 0 0.00% 0.00%
C 252952 205182 0 0 0.00% 0.00%
D 252952 205120 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 14 188 10867 11.12 2862 2666 737.3
A 0 29 10421 10.52 2862 2666 737.3
A 7 110 10086 10.06 2862 2666 737.3
B 2 9 9234 11.57 2852 2704 564.5
B 12 226 8729 10.67 2852 2704 564.5
B 14 254 7605 8.68 2852 2704 564.5
C 12 241 7819 6.56 2886 2656 786.7
C 7 111 7787 6.52 2886 2656 786.7
C 2 127 7759 6.49 2886 2656 786.7
D 4 160 6889 6.08 2631 2379 741.8
D 1 19 6775 5.93 2631 2379 741.8
D 1 3 6755 5.9 2631 2379 741.8

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