ASTROSAT CZTI

Data Quality Report

Orbit 16773

Creation date: 2024-06-27T17:27:33.853264
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_004T02_9000002490_16773cztM0_level2.evt modeM0/AS1A05_004T02_9000002490_16773cztM0_level2_quad_clean.evt
Size (bytes)192,712,32019,880,640
Size183.8 MB 19.0 MB
Events in quadrant A1,214,633111,874
Events in quadrant B1,374,249111,776
Events in quadrant C1,684,622106,786
Events in quadrant D1,407,718108,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049752
B055801
C067611
D055911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2258311.372896%
B2258451.992914%
C2258743.277236%
D2258361.594331%

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 3429 2260 0 0 0.00% 0.00%
B 3429 2260 0 0 0.00% 0.00%
C 3429 2260 3 3 0.09% 0.13%
D 3429 2260 10 10 0.29% 0.44%

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 0 226 2810 38.42 315 310 65.1
A 12 194 2322 30.92 315 310 65.1
A 3 137 2083 27.24 315 310 65.1
B 5 236 62541 1026.07 314 308 60.7
B 3 64 28706 468.21 314 308 60.7
B 15 35 25138 409.39 314 308 60.7
C 3 233 461852 6570.9 293 295 70.2
C 14 238 45621 645.28 293 295 70.2
C 0 207 32470 458.06 293 295 70.2
D 1 52 176886 2404.55 300 292 73.4
D 11 176 42632 576.51 300 292 73.4
D 13 248 17467 233.86 300 292 73.4

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