ASTROSAT CZTI

Data Quality Report

Orbit 53905

Creation date: 2025-09-15T04:09:40.231359
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_057T04_9000006508_53905cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53905cztM0_level2_quad_clean.evt
Size (bytes)790,165,44075,447,360
Size753.6 MB 72.0 MB
Events in quadrant A2,989,512649,158
Events in quadrant B5,699,469615,133
Events in quadrant C6,178,078537,559
Events in quadrant D13,888,39839,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133742
B0212612
C0227872
D0456542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353280.440737%
B635386113.552652%
C635388813.977648%
D6352598694.238035%

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 7558 6354 11 11 0.15% 0.17%
B 7558 6354 674 674 8.92% 10.61%
C 7558 6354 791 791 10.47% 12.45%
D 7556 6351 4304 4304 56.96% 67.77%

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 15 174 37446 209.65 704 688 175.3
A 15 190 34696 193.96 704 688 175.3
A 12 115 34394 192.24 704 688 175.3
B 10 44 1490715 10569.44 662 639 141.0
B 5 172 1151517 8163.43 662 639 141.0
B 5 250 123039 868.21 662 639 141.0
C 15 224 2092034 11832.04 639 634 176.8
C 1 241 1110035 6276.41 639 634 176.8
C 13 3 228259 1287.78 639 634 176.8
D 8 176 13048796 265998.5 166 159 49.1
D 10 172 70621 1436.38 166 159 49.1
D 3 144 23218 470.06 166 159 49.1

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