ASTROSAT CZTI

Data Quality Report

Orbit 17842

Creation date: 2024-06-27T17:41:57.765825
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_101T06_9000002656_17842cztM0_level2.evt modeM0/AS1A05_101T06_9000002656_17842cztM0_level2_quad_clean.evt
Size (bytes)462,574,08092,963,520
Size441.1 MB 88.7 MB
Events in quadrant A3,047,798602,487
Events in quadrant B3,962,221605,997
Events in quadrant C3,045,244580,786
Events in quadrant D3,506,559567,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135261
B0162551
C0134461
D0151131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6578390.592885%
B65792053.115975%
C6579480.729594%
D65791352.051984%

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 7593 6579 1 1 0.01% 0.02%
B 7594 6580 75 75 0.99% 1.14%
C 7594 6580 0 0 0.00% 0.00%
D 7594 6580 88 88 1.16% 1.34%

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 15 174 10181 58.59 790 775 160.5
A 0 226 7091 39.34 790 775 160.5
A 3 137 5800 31.3 790 775 160.5
B 15 222 669321 4510.07 782 762 148.2
B 7 220 63094 420.49 782 762 148.2
B 0 189 30367 199.71 782 762 148.2
C 14 238 115265 657.19 745 747 174.3
C 3 233 13555 73.5 745 747 174.3
C 5 218 9955 52.84 745 747 174.3
D 7 238 430028 2241.91 750 729 191.5
D 10 70 92685 480.22 750 729 191.5
D 7 223 48127 247.52 750 729 191.5

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