ASTROSAT CZTI

Data Quality Report

Orbit 15771

Creation date: 2024-06-27T17:13:11.324066
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/AS1A04_100T01_9000002336_15771cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15771cztM0_level2_quad_clean.evt
Size (bytes)893,816,640159,730,560
Size852.4 MB 152.3 MB
Events in quadrant A6,334,146973,269
Events in quadrant B6,815,941990,482
Events in quadrant C6,449,321973,818
Events in quadrant D6,548,866960,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278094
B0288033
C0279083
D0288593

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135971391.022284%
B135971701.250276%
C135971931.419431%
D135971551.139957%

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 15698 13601 0 0 0.00% 0.00%
B 15698 13601 6 6 0.04% 0.04%
C 15698 13601 0 0 0.00% 0.00%
D 15698 13601 28 28 0.18% 0.21%

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 3 80 19637 54.65 1634 1596 330.1
A 15 239 18280 50.54 1634 1596 330.1
A 0 226 14792 39.97 1634 1596 330.1
B 5 236 85142 267.51 1633 1592 312.3
B 3 209 74495 233.42 1633 1592 312.3
B 4 173 68680 214.8 1633 1592 312.3
C 14 238 240095 651.97 1567 1575 365.8
C 7 247 50653 134.15 1567 1575 365.8
C 3 233 41012 107.8 1567 1575 365.8
D 1 52 166872 395.15 1577 1537 418.4
D 13 172 141466 334.43 1577 1537 418.4
D 5 51 70792 165.52 1577 1537 418.4

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