ASTROSAT CZTI

Data Quality Report

Orbit 20220802_C07_015T02_9000005258_level2

Creation date: 2026-01-03T22:22:56.873859
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/AS1C07_015T02_9000005258cztM0_level2.fits modeM0/AS1C07_015T02_9000005258cztM0_level2_quad_clean.evt
Size (bytes)80,498,88086,711,040
Size76.8 MB 82.7 MB
Events in quadrant A486,408525,890
Events in quadrant B460,770519,836
Events in quadrant C470,474504,810
Events in quadrant D402,088456,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183060
B0190340
C0193400
D0246800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01810
B01800
C01780
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8918120.134559%
B8915590.661806%
C8906660.741073%
D89153954.430735%

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 10482 8949 0 0 0.00% 0.00%
B 10482 8939 0 0 0.00% 0.00%
C 10482 8933 0 0 0.00% 0.00%
D 10482 8939 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 7 110 405 8.45 127 119 33.9
A 0 29 393 8.09 127 119 33.9
A 9 19 384 7.83 127 119 33.9
B 2 9 394 10.77 122 116 25.8
B 3 80 352 9.14 122 116 25.8
B 2 8 334 8.44 122 116 25.8
C 1 80 389 8.07 124 116 33.8
C 1 81 386 7.99 124 116 33.8
C 3 202 380 7.81 124 116 33.8
D 4 160 303 6.2 114 104 32.1
D 12 6 296 5.99 114 104 32.1
D 10 113 296 5.99 114 104 32.1

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