ASTROSAT CZTI

Data Quality Report

Orbit 20231205_A13_077T01_9000005984_level2

Creation date: 2023-12-08T11:52:41.335281
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/AS1A13_077T01_9000005984cztM0_level2.fits modeM0/AS1A13_077T01_9000005984cztM0_level2_quad_clean.evt
Size (bytes)720,717,120685,857,600
Size687.3 MB 654.1 MB
Events in quadrant A4,202,4103,939,444
Events in quadrant B4,207,3304,060,800
Events in quadrant C4,352,9983,868,875
Events in quadrant D3,606,3623,450,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02736140
B01799540
C01827540
D02395220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016140
B016140
C016140
D016140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7951670768.898838%
B7951617432.192012%
C7951612841.614769%
D7951558007.294221%

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 90751 79465 0 0 0.00% 0.00%
B 90751 79512 0 0 0.00% 0.00%
C 90751 79504 0 0 0.00% 0.00%
D 90750 79445 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 7 110 3408 8.66 1094 1021 275.6
A 15 236 3330 8.38 1094 1021 275.6
A 0 29 3295 8.25 1094 1021 275.6
B 2 9 3811 12.51 1112 1056 220.3
B 2 8 3056 9.08 1112 1056 220.3
B 3 17 3020 8.92 1112 1056 220.3
C 3 202 3279 7.42 1151 1065 298.5
C 3 203 3249 7.32 1151 1065 298.5
C 1 81 3215 7.2 1151 1065 298.5
D 7 3 2638 5.9 1040 948 286.3
D 10 189 2624 5.85 1040 948 286.3
D 6 67 2576 5.69 1040 948 286.3

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