ASTROSAT CZTI

Data Quality Report

Orbit 20170217_G06_076T01_9000001038_level2

Creation date: 2025-11-09T16:37:07.632530
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/AS1G06_076T01_9000001038cztM0_level2.fits modeM0/AS1G06_076T01_9000001038cztM0_level2_quad_clean.evt
Size (bytes)1,146,674,8801,195,557,120
Size1.1 GB 1.1 GB
Events in quadrant A6,977,5847,327,050
Events in quadrant B6,768,5667,385,795
Events in quadrant C6,790,5006,837,880
Events in quadrant D5,850,3026,320,354

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02516040
B02529980
C02572570
D02829830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024780
B024780
C024780
D024780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12171314171.164214%
B12171214791.215164%
C12171218261.500263%
D12171429432.417963%

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 141641 121704 0 0 0.00% 0.00%
B 141641 121704 0 0 0.00% 0.00%
C 141641 121704 0 0 0.00% 0.00%
D 141641 121681 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 6897 11.48 1815 1702 452.6
A 7 110 5852 9.17 1815 1702 452.6
A 0 30 5321 8.0 1815 1702 452.6
B 2 9 5662 11.19 1788 1704 353.7
B 14 254 4600 8.19 1788 1704 353.7
B 3 17 4596 8.18 1788 1704 353.7
C 1 80 4967 7.02 1796 1669 470.0
C 1 81 4911 6.9 1796 1669 470.0
C 12 241 4729 6.51 1796 1669 470.0
D 6 231 4319 6.31 1671 1520 443.2
D 11 82 4250 6.16 1671 1520 443.2
D 7 3 4146 5.92 1671 1520 443.2

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