ASTROSAT CZTI

Data Quality Report

Orbit 20200413_T03_183T01_9000003610_level2

Creation date: 2025-12-10T13:49:33.844745
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/AS1T03_183T01_9000003610cztM0_level2.fits modeM0/AS1T03_183T01_9000003610cztM0_level2_quad_clean.evt
Size (bytes)1,215,319,6801,328,489,280
Size1.1 GB 1.2 GB
Events in quadrant A7,763,9908,747,788
Events in quadrant B7,353,3888,694,386
Events in quadrant C6,964,4727,076,542
Events in quadrant D6,353,1107,353,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02595470
B02643300
C03970470
D03652160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024860
B024860
C024860
D024860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01990
B01990
C01990
D01990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12204115821.296286%
B12204122601.851837%
C1220411826914.969559%
D12204145643.739727%

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 141792 122037 0 0 0.00% 0.00%
B 141792 122018 0 0 0.00% 0.00%
C 141792 122024 0 0 0.00% 0.00%
D 141792 122017 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 7290 10.98 2022 1911 489.8
A 7 110 6183 8.72 2022 1911 489.8
A 9 19 5753 7.84 2022 1911 489.8
B 2 9 5815 10.47 1951 1876 376.2
B 2 8 4885 8.0 1951 1876 376.2
B 5 128 4754 7.65 1951 1876 376.2
C 1 81 5455 8.03 1838 1729 464.1
C 1 80 5383 7.87 1838 1729 464.1
C 12 241 4744 6.5 1838 1729 464.1
D 6 67 4540 6.0 1816 1658 480.4
D 7 3 4534 5.99 1816 1658 480.4
D 6 231 4507 5.93 1816 1658 480.4

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