ASTROSAT CZTI

Data Quality Report

Orbit 21235

Creation date: 2024-06-27T18:25:55.374205
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/AS1A05_062T02_9000003138_21235cztM0_level2.evt modeM0/AS1A05_062T02_9000003138_21235cztM0_level2_quad_clean.evt
Size (bytes)546,713,28090,550,080
Size521.4 MB 86.4 MB
Events in quadrant A3,105,155609,769
Events in quadrant B3,210,729613,905
Events in quadrant C3,053,449582,275
Events in quadrant D6,784,618520,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128261
B0132231
C0126661
D0243551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5950981.647059%
B59501121.882353%
C59511262.117291%
D595186214.484961%

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 7285 5950 0 0 0.00% 0.00%
B 7285 5950 3 3 0.04% 0.05%
C 7286 5952 0 0 0.00% 0.00%
D 7286 5951 835 835 11.46% 14.03%

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 5 16 15581 91.97 791 778 161.0
A 12 96 15214 89.69 791 778 161.0
A 11 47 10299 59.15 791 778 161.0
B 0 190 50286 333.61 786 771 148.4
B 0 230 27547 180.41 786 771 148.4
B 0 228 21418 139.11 786 771 148.4
C 14 238 117666 669.79 747 756 174.5
C 8 128 8365 43.59 747 756 174.5
C 0 10 6935 35.4 747 756 174.5
D 13 174 1877043 10683.59 727 707 175.6
D 13 153 772979 4397.21 727 707 175.6
D 7 238 450806 2562.8 727 707 175.6

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