ASTROSAT CZTI

Data Quality Report

Orbit 20454

Creation date: 2024-06-27T18:15:34.605907
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/AS1A05_160T02_9000003022_20454cztM0_level2.evt modeM0/AS1A05_160T02_9000003022_20454cztM0_level2_quad_clean.evt
Size (bytes)508,838,40070,009,920
Size485.3 MB 66.8 MB
Events in quadrant A3,662,808430,613
Events in quadrant B3,828,651440,476
Events in quadrant C3,430,736409,025
Events in quadrant D4,050,085389,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148602
B0152772
C0139212
D0163692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6459951.470816%
B64591372.121071%
C64591161.795944%
D64591442.229447%

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 7729 6460 18 18 0.23% 0.28%
B 7729 6460 64 64 0.83% 0.99%
C 7729 6460 43 43 0.56% 0.67%
D 7729 6460 118 118 1.53% 1.83%

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 6 240 196032 1173.27 836 822 166.4
A 5 16 174337 1042.87 836 822 166.4
A 12 16 31776 186.04 836 822 166.4
B 7 220 157341 989.53 839 820 158.2
B 10 245 113352 711.43 839 820 158.2
B 0 189 81563 510.46 839 820 158.2
C 9 221 132834 714.64 795 803 184.8
C 14 238 125694 675.99 795 803 184.8
C 3 233 68700 367.5 795 803 184.8
D 15 0 384333 1987.21 795 772 193.0
D 1 52 283690 1465.78 795 772 193.0
D 12 218 146059 752.72 795 772 193.0

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