ASTROSAT CZTI

Data Quality Report

Orbit 58205

Creation date: 2026-07-01T14:03:01.283793
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_042T02_9000006586_58205cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58205cztM0_level2_quad_clean.evt
Size (bytes)614,013,12084,945,600
Size585.6 MB 81.0 MB
Events in quadrant A2,793,052608,724
Events in quadrant B6,121,010618,182
Events in quadrant C2,905,713576,993
Events in quadrant D10,425,655333,006

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129541
B0225881
C0132431
D0352346

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6227641.027782%
B62275188.318612%
C6228661.059730%
D6226278044.651462%

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 7277 6227 12 12 0.16% 0.19%
B 7277 6227 284 284 3.90% 4.56%
C 7277 6228 22 22 0.30% 0.35%
D 7278 6227 2692 2692 36.99% 43.23%

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 3 245 94605 549.04 690 673 171.1
A 7 206 11435 62.9 690 673 171.1
A 13 254 9217 49.94 690 673 171.1
B 10 128 3141653 21836.24 663 638 143.8
B 5 185 86425 596.39 663 638 143.8
B 7 252 50788 348.64 663 638 143.8
C 12 252 167126 910.73 668 663 182.8
C 6 223 66823 361.97 668 663 182.8
C 9 237 50736 273.95 668 663 182.8
D 12 110 7678326 46719.44 575 550 164.3
D 3 224 211237 1282.03 575 550 164.3
D 8 240 110741 670.51 575 550 164.3

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