ASTROSAT CZTI

Data Quality Report

Orbit 20190403_A06_003T05_9000002830_level2

Creation date: 2025-11-29T01:41:01.592912
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/AS1A06_003T05_9000002830cztM0_level2.fits modeM0/AS1A06_003T05_9000002830cztM0_level2_quad_clean.evt
Size (bytes)1,289,401,9201,088,948,160
Size1.2 GB 1.0 GB
Events in quadrant A7,591,7986,003,191
Events in quadrant B7,824,3526,450,169
Events in quadrant C7,839,6426,078,316
Events in quadrant D6,575,1805,237,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027320
B027320
C027320
D027320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03966020
B02965480
C02872520
D03937150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1343631678412.491534%
B13436533282.476835%
C13436528992.157556%
D134364104517.778125%

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 155725 133722 0 0 0.00% 0.00%
B 155725 134360 0 0 0.00% 0.00%
C 155725 134365 0 0 0.00% 0.00%
D 155725 133070 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 0 29 6203 9.15 1974 1854 475.4
A 7 110 6134 9.0 1974 1854 475.4
A 9 19 5717 8.13 1974 1854 475.4
B 2 9 6418 11.15 2064 1967 399.3
B 2 8 5399 8.6 2064 1967 399.3
B 3 17 5143 7.95 2064 1967 399.3
C 12 241 5401 6.59 2070 1928 527.4
C 12 250 5309 6.41 2070 1928 527.4
C 9 209 5280 6.36 2070 1928 527.4
D 10 190 4957 6.53 1877 1708 497.7
D 3 14 4779 6.17 1877 1708 497.7
D 10 189 4577 5.76 1877 1708 497.7

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