ASTROSAT CZTI

Data Quality Report

Orbit 09844

Creation date: 2024-06-27T15:51:21.915155
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/AS1A03_134T01_9000001400_09844cztM0_level2.evt modeM0/AS1A03_134T01_9000001400_09844cztM0_level2_quad_clean.evt
Size (bytes)702,002,880127,134,720
Size669.5 MB 121.2 MB
Events in quadrant A4,847,829794,762
Events in quadrant B4,948,447814,206
Events in quadrant C4,682,175787,576
Events in quadrant D6,080,613737,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021543154
B021584125
C021354148
D025430153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02122
B02120
C02120
D02124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10337550.532069%
B10351640.618298%
C10339190.183770%
D103422842.746084%

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 12792 10398 0 0 0.00% 0.00%
B 12792 10401 2 2 0.02% 0.02%
C 12792 10401 0 0 0.00% 0.00%
D 12792 10406 178 178 1.39% 1.71%

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 14 111 61604 241.99 1239 1217 249.5
A 0 226 11335 40.55 1239 1217 249.5
A 12 194 9915 34.86 1239 1217 249.5
B 4 81 32493 134.2 1248 1219 233.0
B 4 173 32076 132.41 1248 1219 233.0
B 12 111 26743 109.52 1248 1219 233.0
C 13 61 8870 28.01 1194 1202 273.8
C 9 54 8465 26.53 1194 1202 273.8
C 10 22 7360 22.49 1194 1202 273.8
D 1 52 776048 2620.65 1169 1143 295.7
D 2 16 485715 1638.77 1169 1143 295.7
D 2 14 231964 780.61 1169 1143 295.7

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