ASTROSAT CZTI

Data Quality Report

Orbit 24437

Creation date: 2024-06-27T19:06:01.357201
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/AS1T03_183T01_9000003606_24437cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24437cztM0_level2_quad_clean.evt
Size (bytes)485,254,080118,068,480
Size462.8 MB 112.6 MB
Events in quadrant A3,252,788784,734
Events in quadrant B3,541,959799,624
Events in quadrant C3,353,006760,872
Events in quadrant D4,062,310732,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145961
B0153141
C0146941
D0170051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71511101.538246%
B71521472.055369%
C71521612.251119%
D71521672.335011%

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 7526 7152 1 1 0.01% 0.01%
B 7527 7153 4 4 0.05% 0.06%
C 7527 7153 1 1 0.01% 0.01%
D 7527 7153 70 70 0.93% 0.98%

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 4 2 12565 70.02 840 822 167.7
A 13 254 12210 67.9 840 822 167.7
A 3 137 7790 41.55 840 822 167.7
B 0 219 217543 1354.35 841 819 160.0
B 12 111 19528 116.91 841 819 160.0
B 11 111 17198 102.35 841 819 160.0
C 14 238 129874 681.89 811 814 189.3
C 2 16 36718 189.7 811 814 189.3
C 10 9 20364 103.29 811 814 189.3
D 12 218 390569 1978.55 811 787 197.0
D 8 195 269610 1364.56 811 787 197.0
D 1 52 268627 1359.57 811 787 197.0

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