ASTROSAT CZTI

Data Quality Report

Orbit 20190210_C04_001T01_9000002716_level2

Creation date: 2025-11-27T15:44:18.969259
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/AS1C04_001T01_9000002716cztM0_level2.fits modeM0/AS1C04_001T01_9000002716cztM0_level2_quad_clean.evt
Size (bytes)710,231,040956,321,280
Size677.3 MB 912.0 MB
Events in quadrant A4,365,8106,261,652
Events in quadrant B4,245,8686,469,329
Events in quadrant C4,283,8746,104,605
Events in quadrant D3,432,0164,952,737

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015440
B015440
C015440
D015440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01755510
B01578130
C01542080
D02441520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7548730414.028508%
B754877791.031966%
C754878301.099527%
D75487953312.628665%

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 87912 75286 0 0 0.00% 0.00%
B 87910 75483 0 0 0.00% 0.00%
C 87910 75483 0 0 0.00% 0.00%
D 87910 74286 0 0 0.00% 0.00%

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 0 29 4156 10.86 1137 1070 284.2
A 7 110 3465 8.43 1137 1070 284.2
A 0 30 3331 7.96 1137 1070 284.2
B 2 9 3396 10.57 1123 1078 219.3
B 2 8 2825 7.96 1123 1078 219.3
B 5 128 2746 7.6 1123 1078 219.3
C 1 81 3403 8.15 1130 1057 288.0
C 1 80 3369 8.03 1130 1057 288.0
C 12 241 3040 6.89 1130 1057 288.0
D 10 190 2616 6.64 980 896 258.9
D 3 14 2471 6.08 980 896 258.9
D 10 189 2459 6.04 980 896 258.9

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