ASTROSAT CZTI

Data Quality Report

Orbit 11868

Creation date: 2024-06-27T16:19:27.041022
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/AS1G08_048T01_9000001752_11868cztM0_level2.evt modeM0/AS1G08_048T01_9000001752_11868cztM0_level2_quad_clean.evt
Size (bytes)798,071,040137,540,160
Size761.1 MB 131.2 MB
Events in quadrant A5,432,911878,744
Events in quadrant B6,952,113855,491
Events in quadrant C4,887,997866,206
Events in quadrant D6,162,211813,723

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232202
B0277602
C0220482
D0257232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10852670.617398%
B108525785.326207%
C10852160.147438%
D108521961.806119%

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 13318 10855 2 2 0.02% 0.02%
B 13318 10855 373 373 2.80% 3.44%
C 13318 10855 0 0 0.00% 0.00%
D 13318 10855 109 109 0.82% 1.00%

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 1 162 127014 487.17 1284 1259 258.1
A 8 15 112643 431.5 1284 1259 258.1
A 13 251 74450 283.54 1284 1259 258.1
B 4 239 1162249 4841.72 1270 1239 239.8
B 3 64 518515 2157.18 1270 1239 239.8
B 15 185 68457 280.32 1270 1239 239.8
C 13 61 9156 27.45 1252 1261 287.6
C 12 4 3928 9.27 1252 1261 287.6
C 14 234 3640 8.27 1252 1261 287.6
D 1 52 860177 2937.59 1222 1189 292.4
D 8 195 381638 1301.07 1222 1189 292.4
D 13 104 86007 290.06 1222 1189 292.4

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