ASTROSAT CZTI

Data Quality Report

Orbit 29965

Creation date: 2024-06-27T20:09:16.526574
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/AS1A10_058T01_9000004298_29965cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29965cztM0_level2_quad_clean.evt
Size (bytes)642,628,80089,271,360
Size612.9 MB 85.1 MB
Events in quadrant A3,514,094582,379
Events in quadrant B5,379,496574,832
Events in quadrant C5,775,490537,303
Events in quadrant D4,340,656542,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143602
B0204342
C0218722
D0172012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66941251.867344%
B66931942.898551%
C66935778.620947%
D66932363.526072%

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 7824 6696 1 1 0.01% 0.01%
B 7823 6695 3 3 0.04% 0.04%
C 7823 6695 229 229 2.93% 3.42%
D 7823 6695 116 116 1.48% 1.73%

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 8 192 21861 117.87 901 884 178.0
A 13 254 13059 68.41 901 884 178.0
A 12 96 12327 64.3 901 884 178.0
B 6 159 1877293 11348.61 878 855 165.3
B 6 36 49696 295.39 878 855 165.3
B 12 111 19237 111.17 878 855 165.3
C 3 233 2364489 12324.68 834 841 191.8
C 14 238 137898 714.65 834 841 191.8
C 2 114 15958 78.82 834 841 191.8
D 12 233 537712 2699.9 862 840 198.8
D 8 195 336279 1686.9 862 840 198.8
D 7 80 150069 750.46 862 840 198.8

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