ASTROSAT CZTI

Data Quality Report

Orbit 20200508_T03_200T01_9000003654_level2

Creation date: 2025-12-10T23:35:09.886408
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_200T01_9000003654cztM0_level2.fits modeM0/AS1T03_200T01_9000003654cztM0_level2_quad_clean.evt
Size (bytes)1,776,493,4402,296,641,600
Size1.7 GB 2.1 GB
Events in quadrant A11,032,02015,054,535
Events in quadrant B10,546,95215,059,946
Events in quadrant C10,589,80614,175,601
Events in quadrant D9,129,44012,772,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03130
B03130
C03130
D03130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037160
B037160
C037160
D037160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03757120
B04022310
C04239250
D04922430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18247418431.010007%
B18247535561.948760%
C18247542992.355939%
D18247573124.007124%

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 213856 182476 0 0 0.00% 0.00%
B 213856 182459 0 0 0.00% 0.00%
C 213856 182473 0 0 0.00% 0.00%
D 213856 182413 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 10920 11.63 2879 2722 705.1
A 7 110 8905 8.77 2879 2722 705.1
A 0 30 8507 8.2 2879 2722 705.1
B 2 9 8392 10.64 2801 2691 535.9
B 14 254 7012 8.06 2801 2691 535.9
B 2 8 6995 8.03 2801 2691 535.9
C 12 241 7387 6.72 2802 2635 706.6
C 3 126 7069 6.27 2802 2635 706.6
C 2 191 7053 6.25 2802 2635 706.6
D 6 231 6569 6.09 2611 2378 688.6
D 15 46 6494 5.98 2611 2378 688.6
D 6 67 6443 5.9 2611 2378 688.6

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