ASTROSAT CZTI

Data Quality Report

Orbit 20200802_C05_019T04_9000003788_level2

Creation date: 2021-01-09T13:29:25.122816
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_019T04_9000003788cztM0_level2_bc.evt modeM0/AS1C05_019T04_9000003788cztM0_level2_quad_clean.evt
Size (bytes)4,077,368,6402,140,784,640
Size3.8 GB 2.0 GB
Events in quadrant A26,257,09014,575,301
Events in quadrant B24,431,95314,809,349
Events in quadrant C24,588,61014,184,089
Events in quadrant D40,669,17613,697,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022520
B022520
C022520
D022520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02389280
B02336330
C02354690
D02904130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11067416841.521586%
B11067416241.467373%
C11067418831.701393%
D11067458975.328261%

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 127734 110679 53 53 0.04% 0.05%
B 127734 110676 16 16 0.01% 0.01%
C 127734 110676 6 6 0.00% 0.01%
D 127734 110679 1089 1089 0.85% 0.98%

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 0 13 3563122 2761.1 5871 5778 1288.4
A 13 254 170900 128.16 5871 5778 1288.4
A 4 2 48809 33.4 5871 5778 1288.4
B 5 172 1030945 916.26 5920 5786 1118.9
B 0 190 425528 375.15 5920 5786 1118.9
B 0 230 202950 176.22 5920 5786 1118.9
C 3 233 2413113 1788.84 5654 5637 1345.8
C 2 16 265201 192.87 5654 5637 1345.8
C 0 239 93386 65.2 5654 5637 1345.8
D 1 52 15343961 11549.61 5636 5484 1328.1
D 12 233 1019140 763.27 5636 5484 1328.1
D 7 38 765366 572.18 5636 5484 1328.1

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