ASTROSAT CZTI

Data Quality Report

Orbit 58685

Creation date: 2026-08-03T12:28:49.257794
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_004T06_9000006594_58685cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58685cztM0_level2_quad_clean.evt
Size (bytes)2,575,909,440411,600,960
Size2.4 GB 392.5 MB
Events in quadrant A16,303,7112,795,592
Events in quadrant B30,138,7952,632,386
Events in quadrant C15,139,9372,763,962
Events in quadrant D31,462,5142,216,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0699526
B01099406
C0654516
D01144176

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06100
B06100
C06100
D06100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2986113974.678343%
B29862577119.325564%
C298625301.774831%
D29862531317.791842%

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 34201 29867 914 914 2.67% 3.06%
B 34201 29867 3478 3478 10.17% 11.64%
C 34201 29867 157 157 0.46% 0.53%
D 34201 29867 4385 4385 12.82% 14.68%

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 17 2748507 3424.18 3285 3203 801.7
A 10 251 362488 448.13 3285 3203 801.7
A 3 14 171127 209.45 3285 3203 801.7
B 5 172 16309777 24848.77 3071 2950 656.2
B 15 32 445357 674.15 3071 2950 656.2
B 8 234 350325 529.34 3071 2950 656.2
C 15 1 674141 763.53 3244 3215 878.7
C 14 254 480079 542.68 3244 3215 878.7
C 1 12 395310 446.21 3244 3215 878.7
D 2 249 8714768 10355.16 2987 2855 841.3
D 8 160 3974039 4720.23 2987 2855 841.3
D 14 49 2390946 2838.53 2987 2855 841.3

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