ASTROSAT CZTI

Data Quality Report

Orbit 16835

Creation date: 2024-06-27T17:28:25.171225
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/AS1A05_056T01_9000002498_16835cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16835cztM0_level2_quad_clean.evt
Size (bytes)543,251,52079,361,280
Size518.1 MB 75.7 MB
Events in quadrant A3,334,456502,337
Events in quadrant B3,478,821508,883
Events in quadrant C3,870,164479,403
Events in quadrant D5,332,204462,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138613
B0140922
C0159412
D0203502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64451472.280838%
B64451562.420481%
C64451932.994569%
D64453715.756400%

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 7626 6447 2 2 0.03% 0.03%
B 7626 6447 1 1 0.01% 0.02%
C 7626 6447 0 0 0.00% 0.00%
D 7626 6447 244 244 3.20% 3.78%

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 9 143 35603 203.5 855 838 170.8
A 13 228 11534 62.61 855 838 170.8
A 0 226 7395 38.38 855 838 170.8
B 0 229 114236 701.84 852 832 161.6
B 15 35 25793 154.48 852 832 161.6
B 12 111 19408 114.96 852 832 161.6
C 3 233 465753 2463.42 816 824 188.7
C 14 238 126409 665.41 816 824 188.7
C 7 247 50598 263.73 816 824 188.7
D 1 52 2131914 10770.57 818 796 197.9
D 5 222 94179 471.95 818 796 197.9
D 2 234 25927 127.01 818 796 197.9

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