ASTROSAT CZTI

Data Quality Report

Orbit 06254

Creation date: 2024-06-27T15:04:47.330452
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/AS1A02_151T01_9000000818_06254cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06254cztM0_level2_quad_clean.evt
Size (bytes)2,352,836,160457,349,760
Size2.2 GB 436.2 MB
Events in quadrant A16,800,3252,867,657
Events in quadrant B17,314,4212,886,926
Events in quadrant C15,767,8382,855,829
Events in quadrant D18,916,8682,745,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07400
B07400
C07400
D07400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0751189
B0766688
C0737878
D0812098

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363513520.968336%
B363516041.661577%
C363512590.712498%
D363515061.391984%

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 64811 36355 10 10 0.02% 0.03%
B 64811 36355 197 197 0.30% 0.54%
C 64811 36355 0 0 0.00% 0.00%
D 64811 36355 199 199 0.31% 0.55%

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 15 236 676324 799.76 4148 4056 840.6
A 4 2 69520 77.88 4148 4056 840.6
A 8 15 54860 60.44 4148 4056 840.6
B 0 219 594081 744.96 4180 4075 792.0
B 3 64 296182 368.82 4180 4075 792.0
B 4 81 88699 106.85 4180 4075 792.0
C 13 61 31574 29.79 4037 4049 923.9
C 8 222 16370 13.34 4037 4049 923.9
C 14 67 10545 7.03 4037 4049 923.9
D 2 63 1125830 1149.19 4028 3899 976.3
D 12 220 1111287 1134.29 4028 3899 976.3
D 2 152 563735 573.44 4028 3899 976.3

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