ASTROSAT CZTI

Data Quality Report

Orbit 21249

Creation date: 2024-06-27T18:25:26.100317
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_037T01_9000003140_21249cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21249cztM0_level2_quad_clean.evt
Size (bytes)647,409,600101,111,040
Size617.4 MB 96.4 MB
Events in quadrant A3,346,566709,178
Events in quadrant B4,127,454686,529
Events in quadrant C3,334,412675,222
Events in quadrant D8,373,788552,448

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138501
B0163711
C0138021
D0292781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275831.322709%
B62753715.912351%
C62761372.182919%
D6275153724.494024%

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 7640 6275 0 0 0.00% 0.00%
B 7640 6275 229 229 3.00% 3.65%
C 7641 6277 23 23 0.30% 0.37%
D 7640 6276 1451 1451 18.99% 23.12%

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 46873 272.7 849 835 168.8
A 5 168 18989 107.53 849 835 168.8
A 13 254 9761 52.87 849 835 168.8
B 0 189 710824 4631.72 820 803 153.3
B 0 245 130678 847.22 820 803 153.3
B 0 190 24074 151.8 820 803 153.3
C 14 238 126899 689.34 796 804 182.9
C 0 207 83955 454.57 796 804 182.9
C 0 10 17806 92.95 796 804 182.9
D 14 34 3426574 18846.04 745 725 181.8
D 12 235 739774 4065.6 745 725 181.8
D 1 239 398981 2190.86 745 725 181.8

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