ASTROSAT CZTI

Data Quality Report

Orbit 20241129_T05_233T01_9000006438_level2

Creation date: 2025-01-23T10:16:14.346381
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/AS1T05_233T01_9000006438cztM0_level2.fits modeM0/AS1T05_233T01_9000006438cztM0_level2_quad_clean.evt
Size (bytes)2,110,772,1602,310,647,040
Size2.0 GB 2.2 GB
Events in quadrant A6,517,7961,827,697
Events in quadrant B20,552,31635,557,211
Events in quadrant C583,63822,077
Events in quadrant D3,417,904401,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05530
B05530
C05530
D05530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095200
B095180
C095200
D095200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036804000
B014622260
C018620340
D036962200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46932245125596.150404%
B4693715186611.050107%
C46936746865199.847454%
D46929946150998.340077%

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 763513 390426 0 0 0.00% 0.00%
B 763512 468640 0 0 0.00% 0.00%
C 763504 103826 0 0 0.00% 0.00%
D 763511 358857 0 0 0.00% 0.00%

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 14 188 6895 9.68 1790 1665 540.4
A 9 255 6829 9.56 1790 1665 540.4
A 9 19 5785 7.62 1790 1665 540.4
B 2 9 21843 13.43 5532 5253 1235.1
B 2 8 19696 11.69 5532 5253 1235.1
B 2 245 17356 9.8 5532 5253 1235.1
C 3 158 476 6.07 162 148 54.0
C 7 245 469 5.94 162 148 54.0
C 7 111 466 5.89 162 148 54.0
D 6 218 4728 11.59 1022 903 329.9
D 3 30 3753 8.64 1022 903 329.9
D 3 31 3186 6.92 1022 903 329.9

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