ASTROSAT CZTI

Data Quality Report

Orbit 12485

Creation date: 2024-06-27T16:28:03.065216
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_174T01_9000001850_12485cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12485cztM0_level2_quad_clean.evt
Size (bytes)1,461,726,720261,328,320
Size1.4 GB 249.2 MB
Events in quadrant A13,530,7621,669,240
Events in quadrant B10,744,5781,690,691
Events in quadrant C8,472,0101,701,411
Events in quadrant D10,291,0051,596,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519324
B0436043
C0372743
D0423953

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182294002.194306%
B182296463.543804%
C182291340.735092%
D182294682.567338%

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 20140 18231 3 3 0.01% 0.02%
B 20140 18231 278 278 1.38% 1.52%
C 20140 18231 2 2 0.01% 0.01%
D 20140 18231 238 238 1.18% 1.31%

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 23 3736917 8286.83 2209 2164 450.7
A 1 162 303826 669.34 2209 2164 450.7
A 0 226 276054 607.72 2209 2164 450.7
B 4 239 1263351 3020.7 2195 2143 417.5
B 10 245 384591 915.99 2195 2143 417.5
B 0 230 104433 244.99 2195 2143 417.5
C 15 208 40490 76.98 2157 2174 497.8
C 13 61 15773 27.32 2157 2174 497.8
C 8 128 10698 17.12 2157 2174 497.8
D 1 52 1140465 2200.27 2139 2081 517.4
D 8 195 248926 477.1 2139 2081 517.4
D 13 104 173940 332.17 2139 2081 517.4

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