ASTROSAT CZTI

Data Quality Report

Orbit 20170323_A02_080T01_9000001104_level2

Creation date: 2025-11-10T06:41:38.088218
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/AS1A02_080T01_9000001104cztM0_level2.fits modeM0/AS1A02_080T01_9000001104cztM0_level2_quad_clean.evt
Size (bytes)394,585,920409,322,880
Size376.3 MB 390.4 MB
Events in quadrant A2,434,4802,580,893
Events in quadrant B2,342,3302,577,983
Events in quadrant C2,379,6322,399,213
Events in quadrant D1,916,6441,963,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08520
B08520
C08520
D08520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0882670
B0944590
C0860340
D01304400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A418655611.340021%
B4186210842.589461%
C418643140.750048%
D41864463611.073954%

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 50667 41867 0 0 0.00% 0.00%
B 50667 41864 0 0 0.00% 0.00%
C 50667 41867 0 0 0.00% 0.00%
D 50667 41714 0 0 0.00% 0.00%

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 14 188 2422 11.57 631 593 158.0
A 0 29 2420 11.56 631 593 158.0
A 14 204 2130 9.73 631 593 158.0
B 2 9 2002 11.57 619 592 121.9
B 12 226 1621 8.44 619 592 121.9
B 3 17 1580 8.1 619 592 121.9
C 1 80 1765 7.16 628 586 164.7
C 1 81 1754 7.09 628 586 164.7
C 12 241 1701 6.77 628 586 164.7
D 6 231 1405 6.18 547 498 146.7
D 10 189 1394 6.1 547 498 146.7
D 7 5 1388 6.06 547 498 146.7

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