ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T05_9000001954_level2

Creation date: 2025-11-19T23:32:12.893303
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/AS1T02_012T05_9000001954cztM0_level2.fits modeM0/AS1T02_012T05_9000001954cztM0_level2_quad_clean.evt
Size (bytes)38,750,40022,521,600
Size37.0 MB 21.5 MB
Events in quadrant A249,968104,510
Events in quadrant B160,89881,914
Events in quadrant C247,280100,311
Events in quadrant D210,19689,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089200
B0207060
C088270
D0114850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4325100.231214%
B4325199046.011561%
C4325100.231214%
D43251764.069364%

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 5505 4325 0 0 0.00% 0.00%
B 5505 3866 0 0 0.00% 0.00%
C 5505 4325 0 0 0.00% 0.00%
D 5505 4325 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 0 29 245 10.14 65 61 18.1
A 14 188 237 9.7 65 61 18.1
A 7 110 203 7.83 65 61 18.1
B 2 9 138 8.97 42 40 10.9
B 12 226 112 6.59 42 40 10.9
B 15 6 111 6.5 42 40 10.9
C 3 126 177 6.17 65 61 18.8
C 7 111 176 6.11 65 61 18.8
C 12 242 167 5.64 65 61 18.8
D 12 6 162 6.12 59 54 17.7
D 15 63 158 5.89 59 54 17.7
D 4 160 156 5.78 59 54 17.7

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