ASTROSAT CZTI

Data Quality Report

Orbit 39890

Creation date: 2024-06-27T22:09:56.766775
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_032T03_9000005502_39890cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39890cztM0_level2_quad_clean.evt
Size (bytes)186,877,44041,382,720
Size178.2 MB 39.5 MB
Events in quadrant A1,393,847283,930
Events in quadrant B1,920,060270,763
Events in quadrant C1,230,333278,521
Events in quadrant D2,166,750231,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0552
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06046206
B07885326
C05582171
D08796550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A263560.227704%
B26261937.349581%
C264870.264350%
D25882589.969088%

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 2771 2728 3 3 0.11% 0.11%
B 2771 2729 153 153 5.52% 5.61%
C 2771 2733 6 6 0.22% 0.22%
D 2771 2717 247 247 8.91% 9.09%

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 10 83 258262 4433.67 276 271 58.2
A 15 223 18972 321.38 276 271 58.2
A 6 10 17939 303.63 276 271 58.2
B 5 255 321835 5944.23 269 262 54.1
B 0 183 259893 4799.24 269 262 54.1
B 0 221 140381 2590.08 269 262 54.1
C 15 214 110996 1693.71 272 275 65.4
C 0 10 12093 180.78 272 275 65.4
C 1 16 11575 172.86 272 275 65.4
D 12 227 729824 11445.86 251 244 63.7
D 9 19 118399 1853.65 251 244 63.7
D 13 249 72683 1136.44 251 244 63.7

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