ASTROSAT CZTI

Data Quality Report

Orbit 50205

Creation date: 2025-01-10T19:37:41.032288
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/AS1C09_003T01_9000006442_50205cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50205cztM0_level2_quad_clean.evt
Size (bytes)1,106,334,72066,666,240
Size1.0 GB 63.6 MB
Events in quadrant A7,959,171497,619
Events in quadrant B5,317,139649,163
Events in quadrant C13,751,920131,798
Events in quadrant D13,407,361272,497

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283081
B0204381
C0454121
D0444579

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701164324.518729%
B67025418.072217%
C6702540280.602805%
D6701385157.469034%

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 7561 6701 1385 1385 18.32% 20.67%
B 7562 6703 410 410 5.42% 6.12%
C 7561 6701 4023 4023 53.21% 60.04%
D 7560 6700 3627 3627 47.98% 54.13%

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 98 3033137 19007.54 628 611 159.5
A 12 250 684993 4289.63 628 611 159.5
A 10 253 321423 2010.81 628 611 159.5
B 4 206 1678887 11618.23 686 664 144.4
B 10 28 294836 2036.53 686 664 144.4
B 4 170 99513 684.33 686 664 144.4
C 4 111 9802861 120564.57 288 288 81.3
C 15 197 1309233 16099.08 288 288 81.3
C 15 199 507576 6239.28 288 288 81.3
D 7 61 6080205 45294.95 468 452 134.2
D 15 108 1222298 9102.91 468 452 134.2
D 15 106 684160 5093.71 468 452 134.2

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