ASTROSAT CZTI

Data Quality Report

Orbit 20210113_A10_045T07_9000004110_level2

Creation date: 2025-12-19T17:57:19.454908
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/AS1A10_045T07_9000004110cztM0_level2.fits modeM0/AS1A10_045T07_9000004110cztM0_level2_quad_clean.evt
Size (bytes)798,575,040604,771,200
Size761.6 MB 576.8 MB
Events in quadrant A5,033,3783,370,427
Events in quadrant B4,724,7623,341,001
Events in quadrant C4,928,6443,258,895
Events in quadrant D4,065,0902,913,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015600
B015600
C015600
D015600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01685920
B01802870
C01671110
D02687390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7937711231.414768%
B7937122192.795731%
C7937517502.204724%
D79375841710.604094%

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 93082 79374 0 0 0.00% 0.00%
B 93082 79317 0 0 0.00% 0.00%
C 93083 79373 0 0 0.00% 0.00%
D 93082 79067 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 4935 11.49 1312 1228 322.6
A 7 110 3947 8.43 1312 1228 322.6
A 0 30 3803 7.98 1312 1228 322.6
B 2 9 3720 10.33 1251 1194 244.5
B 5 128 3084 7.73 1251 1194 244.5
B 14 254 3080 7.71 1251 1194 244.5
C 1 81 3778 7.83 1302 1223 326.5
C 1 80 3735 7.69 1302 1223 326.5
C 3 126 3379 6.6 1302 1223 326.5
D 15 46 3008 6.29 1163 1062 309.3
D 6 67 2955 6.12 1163 1062 309.3
D 3 14 2879 5.88 1163 1062 309.3

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