ASTROSAT CZTI

Data Quality Report

Orbit 50160

Creation date: 2025-01-05T23:45:00.549845
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/AS1C09_003T01_9000006442_50160cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50160cztM0_level2_quad_clean.evt
Size (bytes)1,149,788,16053,562,240
Size1.1 GB 51.1 MB
Events in quadrant A11,638,123300,354
Events in quadrant B3,477,717644,108
Events in quadrant C12,326,290202,951
Events in quadrant D14,644,43343,637

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388452
B0145331
C0408421
D0476791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6162327153.083414%
B61621682.726388%
C6163427269.316891%
D6163574993.282492%

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 7246 6161 3238 3238 44.69% 52.56%
B 7247 6162 88 88 1.21% 1.43%
C 7248 6163 3693 3693 50.95% 59.92%
D 7247 6162 5298 5298 73.11% 85.98%

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 6 250 6429428 49587.21 500 487 129.6
A 0 98 741985 5719.27 500 487 129.6
A 9 191 657097 5064.51 500 487 129.6
B 5 185 354390 2604.43 649 628 135.8
B 0 155 112223 821.57 649 628 135.8
B 4 216 44937 326.21 649 628 135.8
C 4 111 5897764 53561.12 390 388 110.1
C 15 147 1059497 9619.03 390 388 110.1
C 15 213 687453 6240.06 390 388 110.1
D 15 142 7318324 94359.75 249 239 77.6
D 7 204 1430072 18436.34 249 239 77.6
D 7 126 888975 11459.41 249 239 77.6

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