ASTROSAT CZTI

Data Quality Report

Orbit 53295

Creation date: 2025-08-05T02:25:37.090211
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_011T08_9000006492_53295cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53295cztM0_level2_quad_clean.evt
Size (bytes)594,120,96083,462,400
Size566.6 MB 79.6 MB
Events in quadrant A2,958,836598,191
Events in quadrant B4,795,148634,718
Events in quadrant C9,877,464351,508
Events in quadrant D3,897,176525,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131211
B0183181
C0334312
D0157581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5976651.087684%
B59762474.133199%
C5976259343.390228%
D59762814.702142%

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 7171 5977 36 36 0.50% 0.60%
B 7171 5977 183 183 2.55% 3.06%
C 7171 5976 2396 2396 33.41% 40.09%
D 7171 5977 215 215 3.00% 3.60%

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 3 62 228569 1423.65 636 622 160.1
A 15 174 96555 599.15 636 622 160.1
A 0 8 61570 380.65 636 622 160.1
B 10 254 1539900 11492.16 632 612 133.9
B 4 81 294279 2192.49 632 612 133.9
B 10 28 115600 858.49 632 612 133.9
C 1 241 3638509 26780.49 495 490 135.8
C 4 5 1324754 9748.28 495 490 135.8
C 15 224 826628 6081.43 495 490 135.8
D 11 176 447875 2555.42 611 584 175.0
D 3 12 337752 1926.27 611 584 175.0
D 6 239 175191 997.55 611 584 175.0

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