ASTROSAT CZTI

Data Quality Report

Orbit 40484

Creation date: 2024-06-27T22:16:40.596266
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/AS1A12_022T01_9000005540_40484cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40484cztM0_level2_quad_clean.evt
Size (bytes)354,306,24093,620,160
Size337.9 MB 89.3 MB
Events in quadrant A3,095,987645,900
Events in quadrant B3,252,385661,610
Events in quadrant C2,835,344639,888
Events in quadrant D3,460,044465,240

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130073
B0139232
C0124522
D0146622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6036140.231942%
B6036400.662691%
C603680.132538%
D6036147324.403579%

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 9081 6038 3 3 0.03% 0.05%
B 9081 6038 6 6 0.07% 0.10%
C 9081 6038 0 0 0.00% 0.00%
D 9081 6038 116 116 1.28% 1.92%

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 10 83 535688 4044.77 644 631 132.3
A 13 248 46122 343.89 644 631 132.3
A 2 79 9674 68.36 644 631 132.3
B 4 170 629398 5114.63 640 623 122.9
B 3 112 61163 492.45 640 623 122.9
B 15 85 20063 158.13 640 623 122.9
C 15 214 262314 1781.45 630 631 146.9
C 14 254 45134 302.96 630 631 146.9
C 10 20 38295 256.4 630 631 146.9
D 2 250 753982 5520.83 551 536 136.5
D 12 191 306085 2238.89 551 536 136.5
D 12 79 70673 513.92 551 536 136.5

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