ASTROSAT CZTI

Data Quality Report

Orbit 50194

Creation date: 2025-01-08T08:19:19.505979
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/AS1C09_003T01_9000006442_50194cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50194cztM0_level2_quad_clean.evt
Size (bytes)1,574,127,36052,027,200
Size1.5 GB 49.6 MB
Events in quadrant A15,294,438286,191
Events in quadrant B6,918,044673,934
Events in quadrant C16,921,01080,247
Events in quadrant D18,556,0319,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506510
B0257180
C0553820
D0602800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7548472062.533121%
B754896412.771595%
C7547677189.717769%
D7548746798.926868%

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 7548 7548 4036 4036 53.47% 53.47%
B 7548 7548 674 674 8.93% 8.93%
C 7546 7546 5520 5520 73.15% 73.15%
D 7547 7547 6819 6819 90.35% 90.35%

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 0 98 9678243 66968.17 556 540 144.5
A 4 76 943000 6521.67 556 540 144.5
A 12 250 402578 2782.04 556 540 144.5
B 4 206 2512386 16002.44 735 711 157.0
B 3 249 382618 2433.21 735 711 157.0
B 5 185 263072 1671.56 735 711 157.0
C 15 197 4060121 40365.41 344 341 100.6
C 4 111 4053274 40297.33 344 341 100.6
C 15 196 1245933 12384.62 344 341 100.6
D 7 61 7458633 84593.66 259 247 88.2
D 15 168 3460961 39251.72 259 247 88.2
D 14 66 939853 10657.09 259 247 88.2

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