ASTROSAT CZTI

Data Quality Report

Orbit 20210606_A10_071T12_9000004446_level2

Creation date: 2025-12-26T15:10:30.118352
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_071T12_9000004446cztM0_level2.fits modeM0/AS1A10_071T12_9000004446cztM0_level2_quad_clean.evt
Size (bytes)691,801,920488,050,560
Size659.8 MB 465.4 MB
Events in quadrant A4,418,9422,715,892
Events in quadrant B4,107,9542,694,958
Events in quadrant C4,150,3542,539,176
Events in quadrant D3,596,3962,151,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013880
B013880
C013880
D013880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01496930
B02084560
C01552820
D02390200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6818113692.007891%
B6818117122.510963%
C6818120693.034570%
D6818156168.236899%

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 79606 68164 0 0 0.00% 0.00%
B 79606 68163 0 0 0.00% 0.00%
C 79606 68155 0 0 0.00% 0.00%
D 79605 68156 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 3608 9.01 1151 1084 280.0
A 7 110 3308 7.94 1151 1084 280.0
A 9 19 3250 7.73 1151 1084 280.0
B 2 9 3252 10.45 1088 1043 211.3
B 2 8 2711 7.89 1088 1043 211.3
B 3 80 2701 7.85 1088 1043 211.3
C 1 81 3176 7.74 1098 1029 277.4
C 1 80 3101 7.47 1098 1029 277.4
C 3 187 2823 6.47 1098 1029 277.4
D 15 46 2733 6.62 1027 938 271.2
D 6 67 2563 5.99 1027 938 271.2
D 10 189 2544 5.92 1027 938 271.2

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