ASTROSAT CZTI

Data Quality Report

Orbit 20190301_A05_187T03_9000002748_level2

Creation date: 2025-11-28T02:29:37.100894
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/AS1A05_187T03_9000002748cztM0_level2.fits modeM0/AS1A05_187T03_9000002748cztM0_level2_quad_clean.evt
Size (bytes)1,087,070,400845,101,440
Size1.0 GB 806.0 MB
Events in quadrant A6,673,6464,753,935
Events in quadrant B6,545,0664,847,354
Events in quadrant C6,598,0284,565,524
Events in quadrant D5,376,0703,702,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02641890
B02423400
C02479030
D03736230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022980
B022980
C022980
D022980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01850
B01850
C01850
D01850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11267245023.995669%
B11267219211.704949%
C11267220101.783939%
D1126721408912.504438%

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 131192 112629 0 0 0.00% 0.00%
B 131192 112649 0 0 0.00% 0.00%
C 131192 112657 0 0 0.00% 0.00%
D 131192 111658 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 5624 9.28 1742 1632 430.3
A 7 110 5407 8.77 1742 1632 430.3
A 9 19 5035 7.91 1742 1632 430.3
B 2 9 5234 10.68 1728 1649 335.7
B 2 8 4423 8.26 1728 1649 335.7
B 3 17 4325 7.97 1728 1649 335.7
C 1 81 4950 7.39 1741 1620 450.4
C 1 80 4903 7.29 1741 1620 450.4
C 12 241 4666 6.76 1741 1620 450.4
D 10 190 4014 6.4 1535 1395 409.2
D 3 14 3844 5.99 1535 1395 409.2
D 6 67 3710 5.66 1535 1395 409.2

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