ASTROSAT CZTI

Data Quality Report

Orbit 18537

Creation date: 2024-06-27T17:51:19.263185
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_103T02_9000002750_18537cztM0_level2.evt modeM0/AS1A05_103T02_9000002750_18537cztM0_level2_quad_clean.evt
Size (bytes)190,255,68037,532,160
Size181.4 MB 35.8 MB
Events in quadrant A1,237,004241,261
Events in quadrant B1,289,084247,033
Events in quadrant C1,223,668239,184
Events in quadrant D1,842,785231,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051751
B053631
C051911
D071441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2455431.751527%
B2456532.157980%
C2456622.524430%
D24561706.921824%

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 3345 2455 0 0 0.00% 0.00%
B 3346 2456 1 1 0.03% 0.04%
C 3346 2456 0 0 0.00% 0.00%
D 3346 2456 103 103 3.08% 4.19%

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 3920 53.61 320 312 67.3
A 0 226 2849 37.7 320 312 67.3
A 3 137 2495 32.44 320 312 67.3
B 3 64 29241 461.52 316 308 62.7
B 7 220 8725 134.26 316 308 62.7
B 12 111 7246 110.67 316 308 62.7
C 14 238 47265 662.75 301 301 70.9
C 3 233 2724 34.19 301 301 70.9
C 13 61 2083 25.15 301 301 70.9
D 7 238 503081 6711.8 303 294 74.9
D 1 52 85873 1142.41 303 294 74.9
D 10 70 44386 588.59 303 294 74.9

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