ASTROSAT CZTI

Data Quality Report

Orbit 14570

Creation date: 2024-06-27T16:56:58.506121
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/AS1A04_089T01_9000002146_14570cztM0_level2.evt modeM0/AS1A04_089T01_9000002146_14570cztM0_level2_quad_clean.evt
Size (bytes)2,637,538,560429,364,800
Size2.5 GB 409.5 MB
Events in quadrant A18,494,2372,679,247
Events in quadrant B18,466,0572,709,001
Events in quadrant C20,003,4292,614,960
Events in quadrant D20,479,2692,521,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07380
B07380
C07380
D07380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07740910
B0771259
C0809659
D0849879

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A360865271.460400%
B360865561.540764%
C360864311.194369%
D3608615074.176135%

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 39257 36096 8 8 0.02% 0.02%
B 39257 36096 18 18 0.05% 0.05%
C 39257 36097 0 0 0.00% 0.00%
D 39257 36095 787 787 2.00% 2.18%

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 8 15 1029411 1155.7 4383 4283 887.0
A 12 189 415942 464.09 4383 4283 887.0
A 0 23 152214 166.77 4383 4283 887.0
B 0 189 463387 552.21 4369 4255 831.4
B 0 229 118751 137.71 4369 4255 831.4
B 0 214 107669 124.38 4369 4255 831.4
C 3 233 3426175 3482.18 4241 4254 982.7
C 13 61 30479 26.69 4241 4254 982.7
C 8 128 24834 20.94 4241 4254 982.7
D 10 199 2992233 2736.64 4191 4098 1091.9
D 12 110 1006184 917.75 4191 4098 1091.9
D 1 52 205699 184.63 4191 4098 1091.9

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