ASTROSAT CZTI

Data Quality Report

Orbit 20526

Creation date: 2024-06-27T18:16:25.257899
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_115T03_9000003032_20526cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20526cztM0_level2_quad_clean.evt
Size (bytes)525,493,44084,369,600
Size501.1 MB 80.5 MB
Events in quadrant A3,011,530560,213
Events in quadrant B3,441,557570,782
Events in quadrant C3,037,631536,264
Events in quadrant D6,007,776459,057

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127382
B0139722
C0127682
D0220164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136140.228162%
B6136691.124511%
C6136360.586701%
D613584813.822331%

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 7495 6135 1 1 0.01% 0.02%
B 7496 6136 15 15 0.20% 0.24%
C 7496 6137 0 0 0.00% 0.00%
D 7495 6135 856 856 11.42% 13.95%

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 14 254 13073 78.75 778 763 156.3
A 0 226 6789 38.55 778 763 156.3
A 3 137 5850 32.54 778 763 156.3
B 7 220 120840 823.85 784 766 145.7
B 0 189 90580 616.23 784 766 145.7
B 10 246 60546 410.16 784 766 145.7
C 14 238 117951 670.02 747 752 174.9
C 13 61 5185 25.34 747 752 174.9
C 8 208 3476 15.57 747 752 174.9
D 1 52 2393900 14144.59 694 674 169.2
D 12 238 309111 1822.94 694 674 169.2
D 13 153 298299 1759.04 694 674 169.2

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