ASTROSAT CZTI

Data Quality Report

Orbit 54384

Creation date: 2025-10-17T10:16:06.719061
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/AS1A14_126T19_9000006518_54384cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54384cztM0_level2_quad_clean.evt
Size (bytes)710,576,64084,337,920
Size677.7 MB 80.4 MB
Events in quadrant A2,911,296649,771
Events in quadrant B4,857,582624,762
Events in quadrant C4,919,029562,816
Events in quadrant D13,100,999254,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137042
B0192702
C0195242
D0435342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6621330.498414%
B662278811.899728%
C662274111.189973%
D6622395759.755361%

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 8812 6624 10 10 0.11% 0.15%
B 8813 6624 531 531 6.03% 8.02%
C 8813 6625 523 523 5.93% 7.89%
D 8812 6623 3550 3550 40.29% 53.60%

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 8 62909 353.78 715 697 175.8
A 3 62 47740 267.52 715 697 175.8
A 13 254 15288 82.98 715 697 175.8
B 10 14 2023800 14129.89 668 642 143.2
B 0 171 102036 708.14 668 642 143.2
B 0 213 31581 216.08 668 642 143.2
C 13 3 1555218 8632.21 661 656 180.1
C 1 241 336257 1863.53 661 656 180.1
C 14 254 245043 1357.04 661 656 180.1
D 8 176 10815201 88287.6 427 408 122.5
D 2 172 291137 2373.39 427 408 122.5
D 3 12 77353 628.15 427 408 122.5

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