ASTROSAT CZTI

Data Quality Report

Orbit 23957

Creation date: 2024-06-27T19:00:28.960794
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_101T02_9000003544_23957cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23957cztM0_level2_quad_clean.evt
Size (bytes)582,289,92073,641,600
Size555.3 MB 70.2 MB
Events in quadrant A3,407,885452,760
Events in quadrant B4,061,311448,417
Events in quadrant C3,610,119447,369
Events in quadrant D6,120,647433,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141252
B0161102
C0148152
D0228287

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64211041.619685%
B64212764.298396%
C64211973.068058%
D642080312.507788%

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 7641 6422 0 0 0.00% 0.00%
B 7641 6422 82 82 1.07% 1.28%
C 7641 6422 17 17 0.22% 0.26%
D 7640 6421 433 433 5.67% 6.74%

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 10609 55.81 884 868 174.5
A 0 226 7706 39.18 884 868 174.5
A 3 137 7346 37.12 884 868 174.5
B 3 64 566994 3509.35 866 846 161.3
B 0 189 33700 203.65 866 846 161.3
B 4 216 21816 129.99 866 846 161.3
C 14 238 138350 706.51 851 858 194.6
C 0 10 82319 418.59 851 858 194.6
C 0 239 40405 203.21 851 858 194.6
D 12 218 1538888 7772.12 828 806 197.9
D 8 195 788329 3979.45 828 806 197.9
D 1 52 402359 2029.1 828 806 197.9

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