ASTROSAT CZTI

Data Quality Report

Orbit 16062

Creation date: 2024-06-27T17:17:24.807510
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/AS1A04_230T01_9000002374_16062cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16062cztM0_level2_quad_clean.evt
Size (bytes)156,862,08023,924,160
Size149.6 MB 22.8 MB
Events in quadrant A1,187,969145,148
Events in quadrant B1,140,584148,248
Events in quadrant C1,114,893138,902
Events in quadrant D1,160,488137,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049102
B046531
C045601
D047461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2123602.826189%
B2123582.731983%
C2123602.826189%
D2123462.166745%

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 3189 2124 1 1 0.03% 0.05%
B 3189 2124 0 0 0.00% 0.00%
C 3189 2124 0 0 0.00% 0.00%
D 3189 2124 8 8 0.25% 0.38%

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 3 80 50778 845.13 290 285 59.7
A 9 143 17096 281.37 290 285 59.7
A 12 96 3028 45.91 290 285 59.7
B 12 111 6679 111.8 289 281 57.2
B 11 111 5788 96.23 289 281 57.2
B 4 80 4783 78.67 289 281 57.2
C 14 238 41940 638.35 274 275 65.3
C 3 233 2614 35.84 274 275 65.3
C 9 236 1952 25.69 274 275 65.3
D 1 52 81281 1152.11 281 273 70.3
D 2 234 6659 90.82 281 273 70.3
D 2 152 4665 62.46 281 273 70.3

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