ASTROSAT CZTI

Data Quality Report

Orbit 24037

Creation date: 2024-06-27T19:01:24.707039
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_165T01_9000003558_24037cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24037cztM0_level2_quad_clean.evt
Size (bytes)497,687,040131,564,160
Size474.6 MB 125.5 MB
Events in quadrant A3,159,760890,521
Events in quadrant B3,388,199908,657
Events in quadrant C3,323,216871,275
Events in quadrant D4,738,535839,378

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138052
B0142742
C0139312
D0188122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6821290.425158%
B6821470.689049%
C6821791.158188%
D6821510.747691%

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 7746 6822 0 0 0.00% 0.00%
B 7746 6822 6 6 0.08% 0.09%
C 7746 6822 0 0 0.00% 0.00%
D 7746 6822 10 10 0.13% 0.15%

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 10105 56.77 819 800 163.9
A 0 226 7046 38.11 819 800 163.9
A 3 137 6990 37.77 819 800 163.9
B 0 197 94811 607.31 823 803 154.8
B 7 202 41200 260.97 823 803 154.8
B 12 111 18616 115.08 823 803 154.8
C 14 238 126848 672.78 798 802 187.4
C 7 247 81161 428.92 798 802 187.4
C 13 61 5590 25.56 798 802 187.4
D 8 195 1583236 8202.38 800 777 192.9
D 1 52 53675 274.19 800 777 192.9
D 12 218 31582 159.67 800 777 192.9

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