ASTROSAT CZTI

Data Quality Report

Orbit 56287

Creation date: 2026-02-24T00:25:05.013404
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_049T01_9000006552_56287cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56287cztM0_level2_quad_clean.evt
Size (bytes)748,523,52081,048,960
Size713.8 MB 77.3 MB
Events in quadrant A13,295,104259,031
Events in quadrant B3,801,100663,548
Events in quadrant C5,896,121553,908
Events in quadrant D4,217,524528,682

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0439331
B0157491
C0219603
D0172261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6426409063.647681%
B64262063.205727%
C64256399.945525%
D64264196.520386%

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 7481 6426 4017 4017 53.70% 62.51%
B 7481 6426 75 75 1.00% 1.17%
C 7480 6425 532 532 7.11% 8.28%
D 7481 6426 373 373 4.99% 5.80%

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 15 32 4190351 33500.06 495 482 125.1
A 4 95 3206662 25634.99 495 482 125.1
A 8 176 3081876 24637.26 495 482 125.1
B 4 206 487914 3314.25 689 663 147.0
B 5 185 314387 2133.93 689 663 147.0
B 8 128 47476 318.42 689 663 147.0
C 5 250 2044860 11503.66 656 651 177.7
C 12 254 676279 3802.05 656 651 177.7
C 12 252 211372 1185.82 656 651 177.7
D 12 31 607131 3256.27 662 633 186.3
D 11 129 346162 1855.13 662 633 186.3
D 2 249 253262 1356.36 662 633 186.3

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