ASTROSAT CZTI

Data Quality Report

Orbit 20160818_G05_144T01_9000000612_level2

Creation date: 2025-11-04T22:24:27.894078
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/AS1G05_144T01_9000000612cztM0_level2.fits modeM0/AS1G05_144T01_9000000612cztM0_level2_quad_clean.evt
Size (bytes)412,015,680365,895,360
Size392.9 MB 348.9 MB
Events in quadrant A2,463,8082,074,714
Events in quadrant B2,354,2502,005,902
Events in quadrant C2,440,9562,027,770
Events in quadrant D2,076,3461,830,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0992930
B01134810
C0980830
D01139180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09320
B09320
C09320
D09320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A457639822.145838%
B4576317223.762865%
C457633400.742958%
D4576311952.611280%

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 52023 45744 0 0 0.00% 0.00%
B 52023 45746 0 0 0.00% 0.00%
C 52023 45763 0 0 0.00% 0.00%
D 52023 45733 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 2463 11.22 639 595 166.4
A 14 188 2451 11.15 639 595 166.4
A 7 110 2124 9.19 639 595 166.4
B 2 9 2059 11.43 621 589 128.6
B 12 226 1712 8.73 621 589 128.6
B 14 254 1647 8.23 621 589 128.6
C 1 80 1832 7.12 644 593 174.1
C 1 81 1748 6.63 644 593 174.1
C 12 241 1705 6.39 644 593 174.1
D 11 82 1706 7.24 591 534 162.0
D 7 5 1586 6.5 591 534 162.0
D 3 14 1550 6.27 591 534 162.0

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