ASTROSAT CZTI

Data Quality Report

Orbit 01306

Creation date: 2024-06-27T14:10:43.455411
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/AS1G04_002T02_9000000230_01306cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01306cztM0_level2_quad_clean.evt
Size (bytes)1,481,503,680108,766,080
Size1.4 GB 103.7 MB
Events in quadrant A12,119,170685,179
Events in quadrant B10,035,887728,064
Events in quadrant C8,983,066710,306
Events in quadrant D13,240,589652,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413632
B0350581
C0320241
D0446861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744379210.640871%
B7443801.074835%
C7443310.416499%
D744396212.924896%

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 7543 7444 1739 1739 23.05% 23.36%
B 7543 7444 654 654 8.67% 8.79%
C 7543 7444 401 401 5.32% 5.39%
D 7543 7443 2456 2456 32.56% 33.00%

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 4 32 3213486 5746.55 2307 2324 558.8
A 15 127 29909 49.36 2307 2324 558.8
A 12 243 15920 24.33 2307 2324 558.8
B 8 4 541135 929.71 2440 2448 579.4
B 12 52 90761 152.42 2440 2448 579.4
B 15 22 53603 88.29 2440 2448 579.4
C 15 241 365401 592.32 2184 2254 613.1
C 3 79 30316 45.77 2184 2254 613.1
C 3 111 29657 44.7 2184 2254 613.1
D 13 169 5260419 8067.97 2075 2146 651.7
D 10 84 109253 164.34 2075 2146 651.7
D 2 88 68671 102.07 2075 2146 651.7

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