ASTROSAT CZTI

Data Quality Report

Orbit 42691

Creation date: 2024-06-27T22:43:06.024321
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/AS1A05_013T01_9000005822_42691cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42691cztM0_level2_quad_clean.evt
Size (bytes)392,201,28087,799,680
Size374.0 MB 83.7 MB
Events in quadrant A3,499,178618,106
Events in quadrant B2,409,115648,866
Events in quadrant C5,358,835494,220
Events in quadrant D2,861,779547,171

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135152
B0102552
C0190592
D0118222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49991462.920584%
B4998140.280112%
C4998100320.068027%
D49981012.020808%

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 7062 5000 102 102 1.44% 2.04%
B 7061 4999 2 2 0.03% 0.04%
C 7061 4999 973 973 13.78% 19.46%
D 7061 4999 95 95 1.35% 1.90%

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 13 248 562259 4662.93 587 576 120.5
A 10 83 530646 4400.49 587 576 120.5
A 7 3 100730 831.45 587 576 120.5
B 5 172 43135 381.0 589 575 111.7
B 0 245 15779 136.11 589 575 111.7
B 12 111 13738 117.84 589 575 111.7
C 14 254 2938097 24830.5 511 515 118.3
C 15 214 189911 1600.91 511 515 118.3
C 0 239 110285 927.85 511 515 118.3
D 1 52 297892 2131.91 569 553 139.5
D 12 6 199629 1427.37 569 553 139.5
D 2 249 101226 721.82 569 553 139.5

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