ASTROSAT CZTI

Data Quality Report

Orbit 13577

Creation date: 2024-06-27T16:42:56.240521
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/AS1G08_047T01_9000002002_13577cztM0_level2.evt modeM0/AS1G08_047T01_9000002002_13577cztM0_level2_quad_clean.evt
Size (bytes)514,704,96095,284,800
Size490.9 MB 90.9 MB
Events in quadrant A3,472,693617,668
Events in quadrant B4,438,102602,513
Events in quadrant C3,631,581618,924
Events in quadrant D3,606,302595,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141773
B0170942
C0149272
D0146732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64741402.162496%
B64745328.217485%
C64741382.131603%
D64741442.224282%

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 9080 6475 1 1 0.01% 0.02%
B 9080 6475 362 362 3.99% 5.59%
C 9080 6475 1 1 0.01% 0.02%
D 9080 6475 8 8 0.09% 0.12%

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 1 162 14256 74.99 893 876 178.4
A 0 226 8527 42.88 893 876 178.4
A 15 69 7476 36.99 893 876 178.4
B 0 182 938066 5743.72 867 849 163.2
B 4 80 35260 210.89 867 849 163.2
B 0 189 27554 163.66 867 849 163.2
C 3 233 250496 1267.89 864 871 196.9
C 14 234 9843 45.57 864 871 196.9
C 13 61 6545 28.82 864 871 196.9
D 8 195 95652 454.55 870 847 208.6
D 1 20 46674 219.72 870 847 208.6
D 13 104 36992 173.3 870 847 208.6

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