ASTROSAT CZTI

Data Quality Report

Orbit 21756

Creation date: 2024-06-27T18:31:51.580266
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/AS1A07_005T01_9000003224_21756cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21756cztM0_level2_quad_clean.evt
Size (bytes)635,538,240102,663,360
Size606.1 MB 97.9 MB
Events in quadrant A3,271,197691,808
Events in quadrant B3,642,581717,549
Events in quadrant C3,222,002673,321
Events in quadrant D8,691,403592,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136652
B0147663
C0133192
D0302512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6219360.578871%
B62181011.624317%
C6218731.174011%
D6218145123.335478%

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 7559 6220 0 0 0.00% 0.00%
B 7558 6219 21 21 0.28% 0.34%
C 7558 6219 0 0 0.00% 0.00%
D 7558 6219 1270 1270 16.80% 20.42%

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 15 236 95280 580.55 820 807 162.7
A 13 254 11941 68.42 820 807 162.7
A 4 2 10292 58.29 820 807 162.7
B 3 64 206970 1338.18 829 813 154.1
B 0 230 69011 442.68 829 813 154.1
B 0 189 49137 313.67 829 813 154.1
C 14 238 126843 686.32 793 798 183.7
C 13 61 5581 26.04 793 798 183.7
C 0 10 3228 13.23 793 798 183.7
D 7 238 4270467 23758.38 740 720 179.7
D 1 52 618425 3437.13 740 720 179.7
D 7 223 372416 2068.25 740 720 179.7

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