ASTROSAT CZTI

Data Quality Report

Orbit 40078

Creation date: 2024-06-27T22:12:05.166206
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/AS1T05_086T01_9000005518_40078cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40078cztM0_level2_quad_clean.evt
Size (bytes)1,777,492,800436,363,200
Size1.7 GB 416.1 MB
Events in quadrant A13,283,4373,037,216
Events in quadrant B11,283,4003,102,596
Events in quadrant C21,946,0112,751,879
Events in quadrant D17,356,8482,604,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546146
B0506945
C0818355
D0687375

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249481650.661376%
B24948560.224467%
C2494819767.920475%
D2494810684.280904%

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 31807 24953 112 112 0.35% 0.45%
B 31807 24953 28 28 0.09% 0.11%
C 31807 24953 1717 1717 5.40% 6.88%
D 31807 24953 1000 1000 3.14% 4.01%

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 83 1800791 3182.67 2752 2710 565.0
A 13 248 543713 957.59 2752 2710 565.0
A 9 143 127178 220.31 2752 2710 565.0
B 0 189 144189 268.35 2746 2680 527.3
B 0 230 129265 240.05 2746 2680 527.3
B 5 32 81482 149.44 2746 2680 527.3
C 9 187 8573353 13958.33 2609 2640 614.0
C 15 214 983282 1597.08 2609 2640 614.0
C 14 254 822161 1334.68 2609 2640 614.0
D 12 227 3375409 5110.78 2642 2575 659.9
D 2 249 1605291 2428.56 2642 2575 659.9
D 9 19 773291 1167.85 2642 2575 659.9

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