ASTROSAT CZTI

Data Quality Report

Orbit 08678

Creation date: 2024-06-27T15:35:47.501778
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/AS1G07_024T01_9000001206_08678cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08678cztM0_level2_quad_clean.evt
Size (bytes)1,193,497,920325,560,960
Size1.1 GB 310.5 MB
Events in quadrant A8,794,5602,143,861
Events in quadrant B9,219,6522,205,415
Events in quadrant C8,059,9142,163,397
Events in quadrant D8,814,4912,069,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391704
B0399613
C0376193
D0400093

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185682401.292546%
B185682281.227919%
C18568630.339293%
D185682291.233305%

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 20458 18568 66 66 0.32% 0.36%
B 20458 18569 99 99 0.48% 0.53%
C 20458 18570 1 1 0.00% 0.01%
D 20458 18569 115 115 0.56% 0.62%

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 15 223 259400 606.43 2089 2038 424.4
A 15 239 128482 297.94 2089 2038 424.4
A 15 174 104974 242.55 2089 2038 424.4
B 10 16 548943 1368.51 2113 2060 399.6
B 4 80 85531 208.88 2113 2060 399.6
B 4 173 70026 170.08 2113 2060 399.6
C 4 254 50016 102.7 2037 2041 467.1
C 1 16 32337 64.85 2037 2041 467.1
C 13 61 15791 29.43 2037 2041 467.1
D 10 253 211285 422.4 2037 1973 495.5
D 2 152 205739 411.21 2037 1973 495.5
D 12 233 202195 404.06 2037 1973 495.5

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