ASTROSAT CZTI

Data Quality Report

Orbit 24114

Creation date: 2024-06-27T19:02:19.345553
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/AS1C05_012T04_9000003564_24114cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24114cztM0_level2_quad_clean.evt
Size (bytes)925,937,280214,868,160
Size883.0 MB 204.9 MB
Events in quadrant A5,124,5221,525,445
Events in quadrant B5,276,8301,535,177
Events in quadrant C5,050,9931,439,811
Events in quadrant D11,892,8591,292,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214372
B0218502
C0213832
D0426142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10319550.532997%
B10320910.881783%
C10320760.736434%
D10320184017.829457%

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 12899 10321 0 0 0.00% 0.00%
B 12900 10322 18 18 0.14% 0.17%
C 12900 10322 0 0 0.00% 0.00%
D 12900 10321 1764 1764 13.67% 17.09%

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 13 254 16857 60.1 1322 1302 258.8
A 2 250 13571 47.4 1322 1302 258.8
A 0 226 11481 39.33 1322 1302 258.8
B 0 228 60001 244.96 1300 1273 239.7
B 5 172 49732 202.13 1300 1273 239.7
B 10 247 30586 122.27 1300 1273 239.7
C 14 238 202666 721.19 1233 1243 279.3
C 0 239 23570 79.94 1233 1243 279.3
C 7 247 12280 39.52 1233 1243 279.3
D 1 52 5152643 18505.5 1175 1140 278.4
D 8 195 1983804 7122.23 1175 1140 278.4
D 12 233 128226 456.53 1175 1140 278.4

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