ASTROSAT CZTI

Data Quality Report

Orbit 20643

Creation date: 2024-06-27T18:17:56.872259
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_103T05_9000003052_20643cztM0_level2.evt modeM0/AS1A05_103T05_9000003052_20643cztM0_level2_quad_clean.evt
Size (bytes)760,331,520154,180,800
Size725.1 MB 147.0 MB
Events in quadrant A5,192,0261,012,023
Events in quadrant B5,329,3281,007,438
Events in quadrant C5,053,961968,151
Events in quadrant D6,730,188944,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225082
B0226742
C0220542
D0270302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10646980.920534%
B106461181.108398%
C106471251.174040%
D106471511.418240%

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 12841 10648 4 4 0.03% 0.04%
B 12841 10648 9 9 0.07% 0.08%
C 12842 10649 0 0 0.00% 0.00%
D 12842 10649 76 76 0.59% 0.71%

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 12 16 104241 399.94 1296 1270 257.5
A 5 16 62676 238.5 1296 1270 257.5
A 12 194 27582 102.19 1296 1270 257.5
B 0 219 70718 287.46 1292 1260 241.6
B 0 189 44137 177.45 1292 1260 241.6
B 7 220 43828 176.17 1292 1260 241.6
C 14 238 194261 678.73 1228 1236 284.4
C 7 247 50399 172.87 1228 1236 284.4
C 3 233 12081 38.13 1228 1236 284.4
D 1 52 1372083 4568.43 1240 1203 300.1
D 7 238 245334 813.56 1240 1203 300.1
D 2 165 244818 811.84 1240 1203 300.1

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