ASTROSAT CZTI

Data Quality Report

Orbit 27304

Creation date: 2024-06-27T19:38:39.070860
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/AS1T03_243T01_9000003918_27304cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27304cztM0_level2_quad_clean.evt
Size (bytes)548,737,920100,209,600
Size523.3 MB 95.6 MB
Events in quadrant A3,563,611654,179
Events in quadrant B3,907,530656,951
Events in quadrant C3,470,280628,763
Events in quadrant D5,195,865600,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151640
B0161510
C0148570
D0202190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7103650.915106%
B71042132.998311%
C71041071.506194%
D71044025.658784%

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 7918 7105 7 7 0.09% 0.10%
B 7919 7106 56 56 0.71% 0.79%
C 7919 7106 0 0 0.00% 0.00%
D 7919 7106 285 285 3.60% 4.01%

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 13 248 65342 355.18 898 882 181.5
A 14 235 13943 71.97 898 882 181.5
A 13 254 11867 60.53 898 882 181.5
B 5 172 305820 1788.68 886 864 170.5
B 0 190 57907 334.58 886 864 170.5
B 10 247 30231 172.25 886 864 170.5
C 14 238 134246 657.36 853 856 202.9
C 8 208 6538 28.0 853 856 202.9
C 13 61 6043 25.56 853 856 202.9
D 1 52 1581203 7477.79 847 827 211.3
D 2 250 178529 840.82 847 827 211.3
D 12 233 84085 393.95 847 827 211.3

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