ASTROSAT CZTI

Data Quality Report

Orbit 42091

Creation date: 2024-06-27T22:36:44.633271
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/AS1A12_088T01_9000005742_42091cztM0_level2.fits modeM0/AS1A12_088T01_9000005742_42091cztM0_level2_quad_clean.evt
Size (bytes)108,008,64026,562,240
Size103.0 MB 25.3 MB
Events in quadrant A1,198,329174,361
Events in quadrant B756,269185,868
Events in quadrant C799,098174,899
Events in quadrant D1,118,037152,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046554
B032321
C032151
D043511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1588623.904282%
B158830.188917%
C158810.062972%
D15881157.241814%

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 3022 1589 33 33 1.09% 2.08%
B 3022 1589 0 0 0.00% 0.00%
C 3022 1589 0 0 0.00% 0.00%
D 3022 1589 88 88 2.91% 5.54%

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 15 222 246294 5966.72 189 185 41.2
A 10 83 194088 4701.03 189 185 41.2
A 15 223 15165 363.18 189 185 41.2
B 5 255 15367 383.58 187 182 39.6
B 12 111 4696 114.03 187 182 39.6
B 11 111 4543 110.16 187 182 39.6
C 15 214 69265 1533.75 186 187 45.0
C 12 249 2021 40.72 186 187 45.0
C 8 79 1854 37.01 186 187 45.0
D 12 6 268438 5950.97 181 176 45.1
D 13 112 49686 1098.3 181 176 45.1
D 1 52 28282 623.49 181 176 45.1

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