ASTROSAT CZTI

Data Quality Report

Orbit 24372

Creation date: 2024-06-27T19:05:17.406603
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_145T01_9000003594_24372cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24372cztM0_level2_quad_clean.evt
Size (bytes)608,446,08084,827,520
Size580.3 MB 80.9 MB
Events in quadrant A3,353,952530,925
Events in quadrant B3,402,100543,894
Events in quadrant C4,222,611522,163
Events in quadrant D6,994,500505,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144062
B0144792
C0171202
D0253722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66941051.568569%
B66951021.523525%
C66951882.808066%
D6695189228.259895%

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 8654 6696 0 0 0.00% 0.00%
B 8655 6697 0 0 0.00% 0.00%
C 8655 6697 4 4 0.05% 0.06%
D 8655 6697 1580 1580 18.26% 23.59%

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 10504 55.12 868 848 175.2
A 3 137 7836 39.89 868 848 175.2
A 0 226 7558 38.3 868 848 175.2
B 12 111 20061 116.43 867 848 165.0
B 11 111 17988 103.87 867 848 165.0
B 14 111 15662 89.77 867 848 165.0
C 7 247 744240 3781.3 841 848 196.6
C 14 238 134756 681.13 841 848 196.6
C 3 233 52667 263.58 841 848 196.6
D 9 35 3531830 19374.12 750 726 182.3
D 8 195 222842 1218.68 750 726 182.3
D 1 52 200851 1098.03 750 726 182.3

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