ASTROSAT CZTI

Data Quality Report

Orbit 20210104_A10_110T05_9000004098_level2

Creation date: 2025-12-18T22:22:28.859157
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/AS1A10_110T05_9000004098cztM0_level2.fits modeM0/AS1A10_110T05_9000004098cztM0_level2_quad_clean.evt
Size (bytes)581,463,360645,053,760
Size554.5 MB 615.2 MB
Events in quadrant A3,592,7044,071,657
Events in quadrant B3,437,6764,080,064
Events in quadrant C3,520,0423,914,684
Events in quadrant D2,941,9043,355,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012200
B012200
C012200
D012200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253090
B01283070
C01276920
D02047220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599904940.823471%
B599908221.370228%
C5999011451.908651%
D59990694311.573596%

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 68720 59983 0 0 0.00% 0.00%
B 68720 59978 0 0 0.00% 0.00%
C 68720 59981 0 0 0.00% 0.00%
D 68720 59940 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 3437 11.03 937 881 231.7
A 7 110 2833 8.42 937 881 231.7
A 0 30 2690 7.81 937 881 231.7
B 2 9 2796 10.78 910 873 178.5
B 2 8 2297 7.98 910 873 178.5
B 5 128 2258 7.76 910 873 178.5
C 12 241 2466 6.86 930 874 232.2
C 3 126 2457 6.82 930 874 232.2
C 3 187 2382 6.5 930 874 232.2
D 6 67 2155 6.27 839 768 221.2
D 3 14 2116 6.09 839 768 221.2
D 15 47 2032 5.71 839 768 221.2

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