ASTROSAT CZTI

Data Quality Report

Orbit 20220313_A11_086T01_9000005002_level2

Creation date: 2026-01-01T23:08:15.158758
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_086T01_9000005002cztM0_level2.fits modeM0/AS1A11_086T01_9000005002cztM0_level2_quad_clean.evt
Size (bytes)430,289,280357,629,760
Size410.4 MB 341.1 MB
Events in quadrant A2,552,6601,957,732
Events in quadrant B2,509,2681,984,882
Events in quadrant C2,651,2482,019,609
Events in quadrant D2,237,8461,788,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09140
B09140
C09140
D09140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01072770
B01169350
C0971560
D01349500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4485225265.631856%
B4485224995.571658%
C448524190.934184%
D4485219524.352091%

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 101100 43864 0 0 0.00% 0.00%
B 101102 44820 0 0 0.00% 0.00%
C 101102 44840 0 0 0.00% 0.00%
D 101102 44728 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 2100 8.85 666 628 166.3
A 7 110 2074 8.69 666 628 166.3
A 9 19 2023 8.39 666 628 166.3
B 2 9 2154 11.4 664 637 133.1
B 3 80 1936 9.76 664 637 133.1
B 5 128 1745 8.33 664 637 133.1
C 1 81 2171 8.42 701 663 179.0
C 1 80 2092 7.98 701 663 179.0
C 3 203 2057 7.79 701 663 179.0
D 7 3 1674 6.42 640 588 169.2
D 10 189 1641 6.22 640 588 169.2
D 4 160 1612 6.05 640 588 169.2

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