ASTROSAT CZTI

Data Quality Report

Orbit 44820

Creation date: 2024-06-27T23:07:33.154955
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/AS1A13_024T02_9000006026_44820cztM0_level2.fits modeM0/AS1A13_024T02_9000006026_44820cztM0_level2_quad_clean.evt
Size (bytes)604,517,76099,797,760
Size576.5 MB 95.2 MB
Events in quadrant A7,704,115600,909
Events in quadrant B3,378,909723,283
Events in quadrant C2,819,676687,451
Events in quadrant D8,004,424585,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273001
B0142841
C0127551
D0281421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6076111618.367347%
B60761652.715602%
C6076811.333114%
D607772811.979595%

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 7216 6077 913 913 12.65% 15.02%
B 7216 6076 54 54 0.75% 0.89%
C 7216 6077 18 18 0.25% 0.30%
D 7217 6077 634 634 8.78% 10.43%

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 15 223 3356098 25439.82 640 627 131.9
A 10 83 1806851 13694.06 640 627 131.9
A 13 248 48940 366.29 640 627 131.9
B 0 189 192157 1417.35 690 669 135.1
B 5 255 92464 679.45 690 669 135.1
B 15 36 88694 651.54 690 669 135.1
C 12 2 44817 279.2 682 685 158.1
C 1 3 43768 272.56 682 685 158.1
C 14 254 33685 208.77 682 685 158.1
D 13 187 2475017 15187.56 652 633 162.9
D 2 249 939186 5760.76 652 633 162.9
D 1 52 889643 5456.67 652 633 162.9

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