ASTROSAT CZTI

Data Quality Report

Orbit 40740

Creation date: 2024-06-27T22:19:51.081328
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/AS1A12_066T01_9000005562_40740cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40740cztM0_level2_quad_clean.evt
Size (bytes)510,249,60078,932,160
Size486.6 MB 75.3 MB
Events in quadrant A2,883,673607,346
Events in quadrant B2,686,548619,584
Events in quadrant C9,529,706346,552
Events in quadrant D3,355,555427,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117202
B0117031
C0321181
D0138601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554360.108245%
B5543190.342775%
C5543264647.735883%
D5543133624.102472%

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 6976 5544 2 2 0.03% 0.04%
B 6976 5544 8 8 0.11% 0.14%
C 6975 5543 2549 2549 36.54% 45.99%
D 6976 5544 101 101 1.45% 1.82%

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 440608 3461.61 617 603 127.1
A 12 189 35635 275.6 617 603 127.1
A 13 248 15528 117.42 617 603 127.1
B 4 170 91672 750.61 612 594 121.3
B 0 229 73205 598.42 612 594 121.3
B 0 190 35779 289.98 612 594 121.3
C 9 187 7425383 65342.45 482 485 113.6
C 15 214 189725 1665.4 482 485 113.6
C 12 249 14205 120.74 482 485 113.6
D 12 227 373420 2989.22 505 491 124.8
D 2 249 280708 2246.08 505 491 124.8
D 12 191 272532 2180.55 505 491 124.8

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