ASTROSAT CZTI

Data Quality Report

Orbit 50201

Creation date: 2025-01-08T18:04:42.334930
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_003T01_9000006442_50201cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50201cztM0_level2_quad_clean.evt
Size (bytes)927,282,24067,746,240
Size884.3 MB 64.6 MB
Events in quadrant A8,353,775387,877
Events in quadrant B5,166,981587,309
Events in quadrant C10,477,646282,399
Events in quadrant D9,863,013373,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287231
B0194852
C0352681
D0335421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6011215935.917485%
B60105889.783694%
C6010314652.346090%
D6010203233.810316%

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 7101 6011 1890 1890 26.62% 31.44%
B 7100 6011 370 370 5.21% 6.16%
C 7099 6010 2729 2729 38.44% 45.41%
D 7100 6010 2054 2054 28.93% 34.18%

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 6 250 2236358 16832.09 531 518 132.8
A 8 8 1956197 14722.95 531 518 132.8
A 0 98 428286 3220.37 531 518 132.8
B 4 206 2056221 15770.04 614 595 130.4
B 0 155 142204 1086.37 614 595 130.4
B 12 3 54652 414.71 614 595 130.4
C 4 111 6604429 53302.48 434 431 123.9
C 15 213 839840 6775.08 434 431 123.9
C 1 60 189541 1526.35 434 431 123.9
D 7 61 2100613 13554.97 536 516 154.9
D 15 185 1433931 9251.91 536 516 154.9
D 15 108 1197625 7726.68 536 516 154.9

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