ASTROSAT CZTI

Data Quality Report

Orbit 23024

Creation date: 2024-06-27T18:48:55.674031
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/AS1C05_004T01_9000003404_23024cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23024cztM0_level2_quad_clean.evt
Size (bytes)446,711,04099,216,000
Size426.0 MB 94.6 MB
Events in quadrant A2,875,700655,144
Events in quadrant B3,055,578662,086
Events in quadrant C3,005,504634,997
Events in quadrant D4,166,865615,935

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127541
B0132001
C0129791
D0165891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263270.431103%
B6263701.117675%
C6264620.989783%
D62631842.937889%

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 7283 6264 0 0 0.00% 0.00%
B 7283 6264 25 25 0.34% 0.40%
C 7284 6265 3 3 0.04% 0.05%
D 7283 6264 135 135 1.85% 2.16%

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 8807 53.73 743 728 150.4
A 6 16 7583 45.59 743 728 150.4
A 3 137 6440 37.99 743 728 150.4
B 4 216 108395 761.61 739 719 141.4
B 0 190 22602 154.78 739 719 141.4
B 0 189 18768 127.66 739 719 141.4
C 14 238 115446 681.1 720 725 168.4
C 0 207 49740 291.0 720 725 168.4
C 0 10 12090 67.47 720 725 168.4
D 9 85 443291 2526.86 724 704 175.2
D 1 52 372866 2124.78 724 704 175.2
D 12 227 256369 1459.67 724 704 175.2

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