ASTROSAT CZTI

Data Quality Report

Orbit 53950

Creation date: 2025-09-18T05:09:20.055532
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/AS1A14_057T04_9000006508_53950cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53950cztM0_level2_quad_clean.evt
Size (bytes)940,109,76053,357,760
Size896.6 MB 50.9 MB
Events in quadrant A3,249,612476,598
Events in quadrant B3,814,275503,288
Events in quadrant C13,739,132103,979
Events in quadrant D13,506,97990,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140795
B01568213
C04520751
D04454185

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6327671.058954%
B63232443.858928%
C6322464973.536855%
D6319523882.892863%

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 7555 6330 32 32 0.42% 0.51%
B 7555 6329 133 133 1.76% 2.10%
C 7555 6330 4535 4535 60.03% 71.64%
D 7554 6322 3936 3936 52.10% 62.26%

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 13 248 178752 1033.88 696 679 172.2
A 15 174 146477 846.49 696 679 172.2
A 3 14 42456 242.55 696 679 172.2
B 0 213 496344 3391.16 685 662 146.2
B 0 155 201517 1374.13 685 662 146.2
B 6 255 135206 920.47 685 662 146.2
C 1 241 11555057 100463.74 415 412 115.0
C 13 3 387692 3367.27 415 412 115.0
C 12 249 69111 597.31 415 412 115.0
D 8 176 11221074 151382.41 253 242 74.1
D 2 165 380216 5126.3 253 242 74.1
D 6 239 305028 4111.93 253 242 74.1

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