ASTROSAT CZTI

Data Quality Report

Orbit 20222

Creation date: 2024-06-27T18:12:37.864319
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_117T01_9000002998_20222cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20222cztM0_level2_quad_clean.evt
Size (bytes)1,150,364,160190,941,120
Size1.1 GB 182.1 MB
Events in quadrant A8,078,7031,220,523
Events in quadrant B8,523,8781,221,080
Events in quadrant C8,086,1191,153,612
Events in quadrant D9,126,2591,141,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325583
B0340223
C0325163
D0363153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151552181.438469%
B151552901.913560%
C151552721.794787%
D151553182.098317%

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 19005 15158 12 12 0.06% 0.08%
B 19005 15158 27 27 0.14% 0.18%
C 19005 15158 5 5 0.03% 0.03%
D 19005 15158 156 156 0.82% 1.03%

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 14 238 61680 146.11 2054 2018 408.3
A 9 143 35545 82.11 2054 2018 408.3
A 13 252 34433 79.39 2054 2018 408.3
B 7 220 338425 901.05 2011 1964 373.4
B 10 245 128971 340.13 2011 1964 373.4
B 12 111 43452 111.11 2011 1964 373.4
C 14 238 305617 676.56 1943 1964 448.8
C 3 233 197038 434.64 1943 1964 448.8
C 1 16 15655 30.5 1943 1964 448.8
D 1 52 865631 1806.17 2001 1950 478.2
D 11 176 227557 471.8 2001 1950 478.2
D 9 1 111384 228.85 2001 1950 478.2

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