ASTROSAT CZTI

Data Quality Report

Orbit 20250716_C09_011T07_9000006488_level2

Creation date: 2025-08-05T14:18:20.958009
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_011T07_9000006488cztM0_level2.fits modeM0/AS1C09_011T07_9000006488cztM0_level2_quad_clean.evt
Size (bytes)5,110,672,3202,746,987,200
Size4.8 GB 2.6 GB
Events in quadrant A20,306,0525,207,202
Events in quadrant B31,528,95611,996,408
Events in quadrant C27,907,8987,851,428
Events in quadrant D25,724,0969,189,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144880
B0144900
C0144840
D0144880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09100
B09110
C09110
D09110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043735150
B020760580
C033126890
D027781130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71390943649061.140846%
B714225591988.288425%
C71415620376328.532001%
D71403614441620.225311%

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 909697 690767 0 0 0.00% 0.00%
B 909697 713038 0 0 0.00% 0.00%
C 909697 709462 0 0 0.00% 0.00%
D 909697 704526 0 0 0.00% 0.00%

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 14 188 23935 10.59 5366 4974 1790.8
A 9 255 20130 8.46 5366 4974 1790.8
A 14 204 19556 8.14 5366 4974 1790.8
B 2 9 37025 14.87 8398 7994 1952.0
B 2 8 33110 12.87 8398 7994 1952.0
B 9 173 26315 9.39 8398 7994 1952.0
C 2 31 22597 6.14 7508 6875 2561.6
C 3 203 22219 5.99 7508 6875 2561.6
C 15 175 22175 5.97 7508 6875 2561.6
D 6 218 34335 11.11 7400 6573 2498.4
D 15 11 25864 7.72 7400 6573 2498.4
D 6 207 24049 6.99 7400 6573 2498.4

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