ASTROSAT CZTI

Data Quality Report

Orbit 22628

Creation date: 2024-06-27T18:43:47.791242
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/AS1A07_112T01_9000003360_22628cztM0_level2.evt modeM0/AS1A07_112T01_9000003360_22628cztM0_level2_quad_clean.evt
Size (bytes)272,459,52024,408,000
Size259.8 MB 23.3 MB
Events in quadrant A1,304,653148,960
Events in quadrant B1,358,674151,642
Events in quadrant C1,361,427148,029
Events in quadrant D4,045,105100,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06069491
B06170460
C06146473
D0157231937

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0604
B0604
C0595
D0604

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2650391.471698%
B2668421.574213%
C2664863.228228%
D2584138153.444272%

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 3454 2712 0 0 0.00% 0.00%
B 3467 2722 1 1 0.03% 0.04%
C 3451 2715 0 0 0.00% 0.00%
D 3362 2658 792 792 23.56% 29.80%

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 13 254 4422 58.36 337 328 70.2
A 3 137 2977 37.76 337 328 70.2
A 0 226 2906 36.75 337 328 70.2
B 0 190 12837 187.37 337 328 66.8
B 12 111 7796 111.86 337 328 66.8
B 0 197 7294 104.34 337 328 66.8
C 14 238 51739 661.6 328 330 77.7
C 2 16 15083 189.86 328 330 77.7
C 9 54 6898 84.53 328 330 77.7
D 1 239 2895917 47083.81 244 237 61.5
D 1 52 193682 3145.42 244 237 61.5
D 12 233 12494 199.3 244 237 61.5

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