ASTROSAT CZTI

Data Quality Report

Orbit 48442

Creation date: 2024-09-12T10:36:13.937512
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/AS1A13_029T01_9000006426_48442cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48442cztM0_level2_quad_clean.evt
Size (bytes)1,044,532,800216,622,080
Size996.1 MB 206.6 MB
Events in quadrant A14,880,8021,379,097
Events in quadrant B6,589,7321,515,306
Events in quadrant C6,511,0021,440,353
Events in quadrant D9,598,9841,254,764

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535913
B0297173
C0297053
D0385403

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140328355.950684%
B140321090.776796%
C14032730.520239%
D140337895.622461%

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 16197 14035 332 332 2.05% 2.37%
B 16197 14035 18 18 0.11% 0.13%
C 16197 14035 34 34 0.21% 0.24%
D 16198 14036 586 586 3.62% 4.17%

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 10 83 8292240 26287.24 1508 1474 315.4
A 13 248 690297 2184.03 1508 1474 315.4
A 0 31 40953 125.17 1508 1474 315.4
B 12 16 413601 1348.72 1533 1484 305.6
B 0 197 40577 127.94 1533 1484 305.6
B 12 111 39240 123.56 1533 1484 305.6
C 12 2 482687 1353.86 1511 1516 355.4
C 15 208 44391 120.64 1511 1516 355.4
C 12 250 38728 104.7 1511 1516 355.4
D 2 165 1352508 3640.2 1480 1435 371.2
D 2 249 762851 2051.48 1480 1435 371.2
D 5 222 497069 1335.39 1480 1435 371.2

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