ASTROSAT CZTI

Data Quality Report

Orbit 23628

Creation date: 2024-06-27T18:56:59.183269
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/AS1A07_147T01_9000003490_23628cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23628cztM0_level2_quad_clean.evt
Size (bytes)744,321,60072,673,920
Size709.8 MB 69.3 MB
Events in quadrant A3,453,571439,004
Events in quadrant B4,253,874442,373
Events in quadrant C3,535,185431,269
Events in quadrant D10,807,024381,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148862
B0170641
C0149861
D0370771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7271771.059002%
B72722513.451595%
C72721211.663916%
D7272259735.712321%

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 7631 7271 1 1 0.01% 0.01%
B 7632 7272 131 131 1.72% 1.80%
C 7632 7272 1 1 0.01% 0.01%
D 7631 7271 2543 2543 33.32% 34.97%

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 13 254 11190 57.04 893 874 180.8
A 12 96 10774 54.74 893 874 180.8
A 3 137 8030 39.57 893 874 180.8
B 3 64 594590 3478.01 879 857 170.7
B 0 189 91771 532.56 879 857 170.7
B 0 230 83691 485.23 879 857 170.7
C 14 238 134243 658.08 856 860 202.7
C 0 10 32597 156.58 856 860 202.7
C 7 247 20490 96.85 856 860 202.7
D 1 52 6354549 34973.82 739 718 181.7
D 12 233 1393597 7666.92 739 718 181.7
D 9 85 155322 851.0 739 718 181.7

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