ASTROSAT CZTI

Data Quality Report

Orbit 23871

Creation date: 2024-06-27T18:59:35.983288
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/AS1A07_001T01_9000003538_23871cztM0_level2.evt modeM0/AS1A07_001T01_9000003538_23871cztM0_level2_quad_clean.evt
Size (bytes)457,332,480133,009,920
Size436.1 MB 126.8 MB
Events in quadrant A3,100,884906,781
Events in quadrant B3,242,828928,134
Events in quadrant C3,359,910875,409
Events in quadrant D3,696,788856,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135592
B0138122
C0141852
D0154622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6623120.181187%
B6623290.437868%
C66231091.645780%
D6623410.619055%

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 7668 6624 0 0 0.00% 0.00%
B 7668 6624 3 3 0.04% 0.05%
C 7668 6624 16 16 0.21% 0.24%
D 7668 6624 5 5 0.07% 0.08%

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 13 254 11915 69.65 801 785 159.8
A 2 250 9587 55.09 801 785 159.8
A 0 226 7007 38.94 801 785 159.8
B 0 189 32389 211.0 806 786 149.8
B 12 111 17789 113.52 806 786 149.8
B 15 36 17476 111.43 806 786 149.8
C 7 247 173065 974.5 764 768 176.8
C 14 238 123763 695.65 764 768 176.8
C 0 10 85464 479.04 764 768 176.8
D 8 195 679585 3641.01 773 751 186.4
D 1 52 30323 158.61 773 751 186.4
D 2 234 29691 155.22 773 751 186.4

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