ASTROSAT CZTI

Data Quality Report

Orbit 20220405_A11_047T09_9000005054_level2

Creation date: 2026-01-02T10:17:18.252781
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/AS1A11_047T09_9000005054cztM0_level2.fits modeM0/AS1A11_047T09_9000005054cztM0_level2_quad_clean.evt
Size (bytes)742,475,520672,886,080
Size708.1 MB 641.7 MB
Events in quadrant A4,819,5244,523,507
Events in quadrant B3,818,9682,909,679
Events in quadrant C4,614,9284,219,872
Events in quadrant D3,741,5303,248,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01713410
B03869290
C01899130
D03065200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016300
B016300
C016300
D016300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A798147330.918385%
B798142671733.474077%
C7981421382.678728%
D798141234115.462200%

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 111460 79795 0 0 0.00% 0.00%
B 111460 79494 0 0 0.00% 0.00%
C 111460 79796 0 0 0.00% 0.00%
D 111460 79259 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 9 19 3973 9.19 1259 1187 303.2
A 7 110 3890 8.91 1259 1187 303.2
A 0 29 3715 8.34 1259 1187 303.2
B 2 9 3321 12.09 1011 969 194.6
B 3 80 2942 10.14 1011 969 194.6
B 2 8 2716 8.98 1011 969 194.6
C 1 81 3792 8.5 1218 1146 311.3
C 1 80 3712 8.24 1218 1146 311.3
C 3 202 3629 7.98 1218 1146 311.3
D 10 113 2816 6.49 1072 982 282.4
D 10 189 2722 6.16 1072 982 282.4
D 6 67 2675 5.99 1072 982 282.4

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