ASTROSAT CZTI

Data Quality Report

Orbit 19310

Creation date: 2024-06-27T18:01:14.609945
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_204T01_9000002856_19310cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19310cztM0_level2_quad_clean.evt
Size (bytes)483,681,60098,000,640
Size461.3 MB 93.5 MB
Events in quadrant A3,094,746658,923
Events in quadrant B3,238,902662,227
Events in quadrant C3,176,551636,501
Events in quadrant D4,718,939579,079

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130811
B0135431
C0132531
D0182771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6178480.776950%
B6179721.165237%
C6179971.569833%
D61796179.985435%

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 7468 6179 0 0 0.00% 0.00%
B 7469 6180 1 1 0.01% 0.02%
C 7469 6180 0 0 0.00% 0.00%
D 7468 6179 527 527 7.06% 8.53%

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 7239 40.49 802 787 159.4
A 0 226 6947 38.65 802 787 159.4
A 3 137 6130 33.53 802 787 159.4
B 0 190 51980 347.18 793 775 147.5
B 0 229 42993 286.25 793 775 147.5
B 15 19 31725 209.85 793 775 147.5
C 14 238 121074 667.78 776 783 180.1
C 3 233 18394 97.76 776 783 180.1
C 13 61 5411 25.69 776 783 180.1
D 7 238 816542 4519.47 748 728 180.5
D 10 66 743388 4114.21 748 728 180.5
D 1 52 113522 624.86 748 728 180.5

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