ASTROSAT CZTI

Data Quality Report

Orbit 51200

Creation date: 2025-03-18T11:22:16.046153
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/AS1C07_001T01_9000006454_51200cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51200cztM0_level2_quad_clean.evt
Size (bytes)659,738,88092,684,160
Size629.2 MB 88.4 MB
Events in quadrant A4,615,166623,648
Events in quadrant B5,369,890641,583
Events in quadrant C7,195,950547,438
Events in quadrant D6,723,533527,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182502
B0205433
C0260702
D0246042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6684791.181927%
B66835197.765973%
C668394714.170283%
D668368310.219961%

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 7609 6685 42 42 0.55% 0.63%
B 7608 6684 328 328 4.31% 4.91%
C 7608 6684 810 810 10.65% 12.12%
D 7608 6684 514 514 6.76% 7.69%

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 12 3 1047268 6015.34 706 689 174.0
A 9 160 148924 852.0 706 689 174.0
A 13 248 143853 822.85 706 689 174.0
B 5 172 822575 5552.01 688 663 148.0
B 8 128 372108 2509.11 688 663 148.0
B 10 254 355221 2395.04 688 663 148.0
C 4 12 1462172 8133.53 653 648 179.7
C 15 253 1166372 6487.37 653 648 179.7
C 1 60 403985 2244.61 653 648 179.7
D 2 62 1985664 10596.63 662 638 187.3
D 15 94 703037 3749.6 662 638 187.3
D 8 176 270414 1440.14 662 638 187.3

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