ASTROSAT CZTI

Data Quality Report

Orbit 07854

Creation date: 2024-06-27T15:24:49.871755
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/AS1G06_077T02_9000001076_07854cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07854cztM0_level2_quad_clean.evt
Size (bytes)3,230,749,440568,886,400
Size3.0 GB 542.5 MB
Events in quadrant A21,175,7473,518,617
Events in quadrant B24,919,7903,571,993
Events in quadrant C23,296,9733,587,887
Events in quadrant D25,355,2303,403,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0944339
B01042448
C01004848
D01069068

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09280
B09280
C09280
D09280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A458679902.158415%
B4586719964.351713%
C458677701.678767%
D4586715993.486167%

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 50247 45877 6 6 0.01% 0.01%
B 50247 45877 736 736 1.46% 1.60%
C 50247 45877 1 1 0.00% 0.00%
D 50247 45877 594 594 1.18% 1.29%

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 15 174 56494 46.65 5460 5346 1096.3
A 0 226 52112 42.66 5460 5346 1096.3
A 12 194 48778 39.62 5460 5346 1096.3
B 4 239 2650985 2540.29 5466 5331 1041.5
B 4 173 333458 315.06 5466 5331 1041.5
B 0 214 121635 111.67 5466 5331 1041.5
C 1 16 2172451 1751.88 5373 5410 1237.0
C 8 229 111895 86.08 5373 5410 1237.0
C 13 61 41494 29.17 5373 5410 1237.0
D 12 233 1082519 832.96 5322 5163 1293.4
D 2 152 853243 655.69 5322 5163 1293.4
D 13 137 822726 632.1 5322 5163 1293.4

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