ASTROSAT CZTI

Data Quality Report

Orbit 58219

Creation date: 2026-07-02T11:40:54.955940
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_58219cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58219cztM0_level2_quad_clean.evt
Size (bytes)2,154,942,720491,071,680
Size2.0 GB 468.3 MB
Events in quadrant A16,258,5843,231,513
Events in quadrant B19,581,7143,435,428
Events in quadrant C15,932,9043,066,334
Events in quadrant D25,341,3052,777,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06940
B06940
C06940
D06940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0743515
B0810865
C0734465
D0995845

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A343194661.357848%
B343197602.214517%
C343192950.859582%
D3431919995.824762%

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 37829 34323 296 296 0.78% 0.86%
B 37829 34320 367 367 0.97% 1.07%
C 37829 34322 222 222 0.59% 0.65%
D 37829 34322 2117 2117 5.60% 6.17%

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 10 251 848147 928.8 3691 3601 909.3
A 13 248 528594 577.37 3691 3601 909.3
A 8 246 390115 425.07 3691 3601 909.3
B 10 128 2352137 3049.89 3629 3484 770.1
B 2 249 663834 857.51 3629 3484 770.1
B 4 236 438811 565.3 3629 3484 770.1
C 12 252 844508 860.43 3570 3537 977.4
C 6 223 655098 666.64 3570 3537 977.4
C 14 254 172546 172.92 3570 3537 977.4
D 12 110 4709338 4756.53 3499 3349 989.4
D 2 31 1143223 1152.12 3499 3349 989.4
D 8 240 857910 863.74 3499 3349 989.4

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