ASTROSAT CZTI

Data Quality Report

Orbit 53580

Creation date: 2025-08-24T08:11:07.610593
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_004T05_9000006502_53580cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53580cztM0_level2_quad_clean.evt
Size (bytes)935,945,28065,508,480
Size892.6 MB 62.5 MB
Events in quadrant A9,039,042369,766
Events in quadrant B5,818,929574,319
Events in quadrant C9,482,111355,799
Events in quadrant D9,824,839249,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311671
B0216481
C0324301
D0335402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216270643.532819%
B621780712.980537%
C6217257741.450861%
D6216335153.909266%

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 6531 6217 1646 1646 25.20% 26.48%
B 6532 6218 326 326 4.99% 5.24%
C 6532 6217 1962 1962 30.04% 31.56%
D 6530 6215 2452 2452 37.55% 39.45%

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 3 63 4506325 32777.4 551 536 137.5
A 3 62 1520242 11055.11 551 536 137.5
A 15 174 270005 1960.25 551 536 137.5
B 4 206 2149797 15337.31 652 628 140.1
B 2 249 216169 1538.18 652 628 140.1
B 10 28 191787 1364.18 652 628 140.1
C 15 224 3312725 23058.79 521 517 143.6
C 1 241 2584901 17991.86 521 517 143.6
C 15 177 332955 2314.35 521 517 143.6
D 8 176 7376646 67117.57 376 359 109.9
D 12 1 388915 3535.51 376 359 109.9
D 7 70 151882 1378.72 376 359 109.9

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