ASTROSAT CZTI

Data Quality Report

Orbit 23676

Creation date: 2024-06-27T18:57:29.183926
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_046T01_9000003498_23676cztM0_level2.evt modeM0/AS1A07_046T01_9000003498_23676cztM0_level2_quad_clean.evt
Size (bytes)596,594,880101,494,080
Size569.0 MB 96.8 MB
Events in quadrant A3,957,804635,529
Events in quadrant B4,163,220649,059
Events in quadrant C4,090,415627,307
Events in quadrant D5,315,431607,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168983
B0175013
C0172613
D0210657

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79781181.479067%
B79781581.980446%
C79782012.519428%
D79773874.851448%

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 27475 7979 0 0 0.00% 0.00%
B 27475 7979 8 8 0.03% 0.10%
C 27475 7979 1 1 0.00% 0.01%
D 27475 7978 204 204 0.74% 2.56%

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 14167 63.51 1026 1005 207.2
A 3 137 9115 39.13 1026 1005 207.2
A 0 226 8797 37.6 1026 1005 207.2
B 0 230 50221 249.6 1021 996 197.2
B 0 189 33379 164.2 1021 996 197.2
B 15 33 27201 132.87 1021 996 197.2
C 14 238 155660 662.48 993 999 233.5
C 7 247 30202 125.09 993 999 233.5
C 10 9 20181 82.16 993 999 233.5
D 1 52 792951 3276.87 993 966 241.7
D 12 233 522210 2156.67 993 966 241.7
D 12 235 89317 365.56 993 966 241.7

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