ASTROSAT CZTI

Data Quality Report

Orbit 20220416_A11_097T07_9000005072_level2

Creation date: 2026-01-02T10:38:54.278661
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_097T07_9000005072cztM0_level2.fits modeM0/AS1A11_097T07_9000005072cztM0_level2_quad_clean.evt
Size (bytes)564,454,080458,570,880
Size538.3 MB 437.3 MB
Events in quadrant A3,653,0803,054,151
Events in quadrant B2,702,5561,242,095
Events in quadrant C3,520,3582,865,180
Events in quadrant D2,931,6522,452,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01276490
B03532570
C01459800
D01925530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410
B02410
C02410
D02410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012760
B012760
C012760
D012760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62257800.128500%
B622562972347.743189%
C6225710471.681739%
D6225750088.044075%

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 86519 62257 0 0 0.00% 0.00%
B 86519 62148 0 0 0.00% 0.00%
C 86519 62253 0 0 0.00% 0.00%
D 86519 62157 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 3038 9.15 952 896 234.2
A 7 110 3022 9.08 952 896 234.2
A 0 29 2781 8.05 952 896 234.2
B 2 9 2376 12.24 716 687 138.0
B 3 80 2100 10.24 716 687 138.0
B 2 8 1992 9.46 716 687 138.0
C 1 81 2847 8.21 929 869 240.8
C 1 80 2768 7.89 929 869 240.8
C 3 203 2701 7.61 929 869 240.8
D 7 3 2218 6.55 839 766 221.6
D 6 67 2145 6.22 839 766 221.6
D 4 160 2128 6.15 839 766 221.6

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