ASTROSAT CZTI

Data Quality Report

Orbit 52217

Creation date: 2025-06-20T17:13:23.476819
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_011T08_9000006472_52217cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52217cztM0_level2_quad_clean.evt
Size (bytes)841,406,40074,168,640
Size802.4 MB 70.7 MB
Events in quadrant A4,585,324565,285
Events in quadrant B5,356,708597,221
Events in quadrant C6,877,644479,642
Events in quadrant D13,843,112166,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179761
B0201781
C0247372
D0454621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62512964.735242%
B62524387.005758%
C6251115618.493041%
D6251454272.660374%

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 7176 6252 238 238 3.32% 3.81%
B 7177 6252 312 312 4.35% 4.99%
C 7175 6251 990 990 13.80% 15.84%
D 7176 6251 4378 4378 61.01% 70.04%

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 12 3 716399 4398.17 644 626 162.7
A 14 254 550952 3381.55 644 626 162.7
A 4 158 163548 1001.1 644 626 162.7
B 10 254 1296730 9770.16 629 610 132.7
B 5 32 729950 5497.77 629 610 132.7
B 10 44 323164 2431.41 629 610 132.7
C 15 224 2495351 15425.51 583 579 161.7
C 15 231 1207393 7461.89 583 579 161.7
C 13 3 274806 1695.58 583 579 161.7
D 6 42 7667537 65319.42 397 378 117.4
D 15 93 3096432 26376.45 397 378 117.4
D 8 176 606339 5162.41 397 378 117.4

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