ASTROSAT CZTI

Data Quality Report

Orbit 32056

Creation date: 2024-06-27T20:35:25.022090
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/AS1A10_109T01_9000004678_32056cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32056cztM0_level2_quad_clean.evt
Size (bytes)1,019,574,720129,790,080
Size972.3 MB 123.8 MB
Events in quadrant A5,673,337808,578
Events in quadrant B9,643,107785,041
Events in quadrant C6,266,482765,950
Events in quadrant D8,486,258741,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248062
B0375072
C0263592
D0333162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11993520.433586%
B119932772.309681%
C119922261.884590%
D119932181.817727%

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 13424 11994 0 0 0.00% 0.00%
B 13424 11993 96 96 0.72% 0.80%
C 13423 11994 21 21 0.16% 0.18%
D 13424 11995 155 155 1.15% 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 13 254 23359 75.03 1463 1438 292.2
A 13 6 21940 70.17 1463 1438 292.2
A 3 137 14638 45.18 1463 1438 292.2
B 6 159 3313450 12062.48 1439 1398 274.6
B 5 172 382847 1389.24 1439 1398 274.6
B 10 245 156614 565.3 1439 1398 274.6
C 0 10 258379 785.74 1395 1406 327.0
C 14 238 240592 731.35 1395 1406 327.0
C 3 233 122551 370.42 1395 1406 327.0
D 8 195 2410884 7218.37 1401 1364 333.8
D 12 233 648316 1938.12 1401 1364 333.8
D 2 250 96641 285.43 1401 1364 333.8

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