ASTROSAT CZTI

Data Quality Report

Orbit 34498

Creation date: 2022-02-14T01:51:05.753191
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_156T01_9000004928_34498cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34498cztM0_level2_quad_clean.evt
Size (bytes)521,026,56090,144,000
Size496.9 MB 86.0 MB
Events in quadrant A2,765,847604,380
Events in quadrant B3,141,977608,127
Events in quadrant C2,968,859604,803
Events in quadrant D6,532,234529,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118683
B0129262
C0120552
D0233122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5465410.750229%
B54652133.897530%
C5465841.537054%
D5465117421.482159%

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 7139 5466 26 26 0.36% 0.48%
B 7139 5466 160 160 2.24% 2.93%
C 7139 5466 58 58 0.81% 1.06%
D 7139 5466 993 993 13.91% 18.17%

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 15 169 167604 1308.68 633 620 127.6
A 9 143 65755 510.47 633 620 127.6
A 10 83 39134 301.84 633 620 127.6
B 5 172 551517 4654.4 617 601 118.4
B 0 189 69132 578.98 617 601 118.4
B 0 229 26128 215.66 617 601 118.4
C 15 214 231817 1619.52 616 621 142.8
C 0 10 198273 1384.55 616 621 142.8
C 14 67 90860 632.12 616 621 142.8
D 12 17 2527612 16577.51 560 549 152.4
D 8 195 847555 5556.35 560 549 152.4
D 2 249 174486 1141.02 560 549 152.4

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