ASTROSAT CZTI

Data Quality Report

Orbit 52599

Creation date: 2025-06-19T06:07:37.173098
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_011T06_9000006478_52599cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52599cztM0_level2_quad_clean.evt
Size (bytes)912,070,08078,085,440
Size869.8 MB 74.5 MB
Events in quadrant A4,684,625594,582
Events in quadrant B9,243,909486,525
Events in quadrant C6,550,841548,649
Events in quadrant D12,784,095283,162

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184752
B0319352
C0240032
D0424432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64574557.046616%
B6457221734.334830%
C645777512.002478%
D6456358755.560719%

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 7647 6458 407 407 5.32% 6.30%
B 7647 6458 2085 2085 27.27% 32.29%
C 7647 6458 703 703 9.19% 10.89%
D 7646 6457 3696 3696 48.34% 57.24%

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 4 249 938841 5644.08 656 641 166.2
A 3 114 363068 2180.31 656 641 166.2
A 7 30 241120 1446.69 656 641 166.2
B 10 254 3555691 27907.99 607 586 127.4
B 10 128 1199675 9412.99 607 586 127.4
B 10 44 984815 7726.31 607 586 127.4
C 15 248 3355688 18840.04 640 631 178.1
C 1 44 207174 1159.82 640 631 178.1
C 15 233 119844 669.43 640 631 178.1
D 12 16 3586066 25115.66 482 458 142.8
D 2 62 2069035 14489.5 482 458 142.8
D 8 176 1786333 12509.3 482 458 142.8

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